The categories listed don't quite define where my favorite category would fall. I'm into face sitting, primarily with dominant females, so that might fall under reluctant or BDSM or Oral or.....?

In all honesty, the reason I began to read erotica, (and sometimes engage in sexts or emails with women) is for the mental and emotional stimulation since I haven't had sex since my wife died. If a woman wants to sext, email or chat to flirt just for fun to tease and maybe even get each other off, I find that a fun challenge. She doesn't have to look or be perfect except in my mind and telling each other what we would do in person, well, why not?
There are two erotic reasons to have sex with a hooker - one is that she might be prettier and have a better body anybody else you can have sex with and the other is that she will do practically anything to please you, get your money, and entice you to come back. Even if you're just butt fucking her, or getting blow jobs, you need to use condoms AND get tested because she probably doesn't. Your own health is something at risk no matter how hot she is, no matter how much you trust her, or what she claims about other partners. If she says she is not having sex with anybody else - why would a woman rely on one client for her only sexual needs. And if you secretly are fucking somebody else, don't you think she is?
Same here, it seems the marital status of widower draws women in their mid 30;s claiming they like older men, blah, blah, send me a photo handsome and they send those photos seemingly to be the same woman or sisters even, big boobs, thighs and ass dressed provocatively. Then quickly comes the sob story of how dire they are and could you send just a little bit to help. One drives a Jaguar but needed $800 for new tires and $25 for gas. No thanks. I too think they are generated by one source whose aim is to hit a bank account somewhere.
I prefer a blow job because, as one sexy lady commented, she can control the orgasm. Nothing like a woman who will take her time, edge me and make me wait, teasing all the time. Maybe stop just as I am about to come and make me eat her to orgasm and then continue with her blow job. Sweet.
Having had some lesbians as personal friends, I think they and many bisexual women might prefer women for several reasons. Women are more sensual, more patient, especially when it comes to foreplay. Hot and heavy rough sex is fine with some women and sometimes, but especially when it comes to oral sex, women have the skill to do it best because they know what feels good, etc. without having to direct their partner or give instructions. My lesbian friends say men are goo eager to get a woman off so hey can get off as well. I also think that lesbians are more loyal, faithful than most men, except married men.
I've experienced a lot of things, including sex with two girls, which is the ULTIMATE sex experience. But something I would like to try is to drink the urine from a woman all day, or perhaps from two women, to see how much I could actually consume without getting sick. I've had it weak and strong but never more than I could consume. I know that's disgusting but it's a fantasy at my age.
Since my first wife would not let me cum in her mouth, and out of curiosity, I tried tasting my own cum at home once and did NOT like it. BUT....years later when a woman was dominating me (I was restrained) she sat on my face and made me eat it out of her and, well, under those circumstances, it was tolerable. Bu/t I have no need to try eating it from another guy.
If I were a young guy, I'd like to kiss and make out with you because you're cute and sexy. But you wouldn't want to make out with a guy old enough to be your grandpa, so realistically from a fantasy standpoint, I'd "taste" you until you had an orgasm or two and then I'd flip you over and lick your butt until you giggled.
There once was a writer named Will
Eating pussy, he could not get his fill,
He said "I could still get my kicks,
If only between licks,
it came it the form of a pill."
A woman said to the man below,
There's something I want you to know,
Let's pretend it's a race,
While I sit on your face,
Don't stop until it's win, place and show.
There was a man from Deluth,
Who didn't mean to be uncouth,
But he, said, being blunt,
"When I drink from a cunt,
It's better than expensive vermouth."
The young girl, lacking any class,
Made a statement bold as brass,
Sucking my cock she swore
She'd never done it before,
And I laughed heartily into her ass.
I've heard some women say they can come if a man spends enough time and knows how to suck her tits but I've never been good enough at it to make a woman come. But when it comes to eating pussy or ass, I put that in body worship category because I will do either for hours. I like to make a woman come giving her oral pleasure. A pussy is too delicious to abandon until she pushes me away or passes out. Her ass is too tempting, too naughty not go get in there and give it a good rimming. You can't rush eating a pussy or ass.