I put my preferences at 80% straight, 20% gay because, while i've only dated and fallen in love with women, i do appreciate big cocks.
and the way i've apreciated them is by sucking them off at gloryholes at adult bookstores in new york city. i actually did this for years. i've compared my cock with tons of dudes and seen tons of cocks through them. for a time, i found them very exciting. i've seen and sucked off some BIG cocks through glory holes. i've also seen how many cocks are kind of small and lame - it's given me perspective on my own cock; i know i'm bigger than most.
i would love the thrill of knowing guys were watching me get hard and knowing they wanted to suck my cock. it was flattering. i loved watching other guys and checking out their cocks. if the cock was big enough i'd motion the person to stick their cock through the hole. i loved rubbing my hard cock with another one and have a swordfight (my favorite male/male sexual activity). if the cock was especially big, smooth and beautiful and if it looked completely clean, i would get on knees and suck a little bit. i never let anyone finish in my mouth because i as afraid for my health. i just enjoyed the completely forbidden thrill of have a big cock in my mouth.
i didn't really let men suck my cock very much. it wasn't a turn on. my philosophy was always that annonymous sex was so risky that i wouldn't bother doing anything that wasn't super exciting for me. i wouldn't even bother touching small cocks, for example. i always much prefered blow jobs from my girlfriend anyway. the idea of a dude sucking me off never did anything for me.
but then one day i got a skin virus (though not herpes or hpv), probably from rubbing my hard dick with another one without a condom, and i'm done for good! i would never consider any type of sexual activity with a man annonymously -- even with a condom, i can't stand the risk anymore. i've never dated a man or had feelings for one, so my days of experimenting with men sexually may very well be over.
i recently took an std test and am proud to say i'm completely clean. the gloryholes were wild, and i'm lucky not to have gotten anything permanent. but i won't put myself at risk anymore.