Eden saidI'd add "unwillingness to have anal sex" as a potential reason for celibacy. Since anal intercourse is somewhat of a sexual norm in our community, abstaining from it does leave you warming the bench, so to speak.
Anal intercourse is fairly common in the US, too, but you do find guys who prefer other things. I have no great interest in anal, only do it when the other guy wants it, either as top or bottom. Otherwise, I prefer oral & manual if that's OK with him.
Just a couple of weeks ago, my General Practitioner was going to do a DRE on me (digital rectal exam). And I said to her: "Please go gently! Despite being a gay man, I haven't done anything anal in a while, and this might hurt me."
Now it happens that most of her practice is gay men, HIV+ in fact, in which she specializes, and I'm one of her few negative patients.
"You'd be surprised how many of my gay patients tell me that." she replied.
I have no idea what things are like in Algeria, but would another gay man turn down oral, just because you don't want anal? I have never understood having an exclusive focus on just one kind of sex, but at the same time I have run into it. Guys who not only want only one manner of sex, but only when it's done a very specific way. Fail to play their exact game, and they don't want to talk to you. I find that too limiting, too constrictive, and from my standpoint, too controlling.
I'm willing to be flexible, like with anal, though not my favorite, but if you try to pull all the strings, then I pull out. I like to explore with a guy, not be exploited.