The funny thing is that I don't really feel the need of jerking off until I see a little bit of porn.
Well, you're a guy, like all of us. It's normal for us to be "triggered" with visuals. The only answer I have for you is a return question … so what?
So what? What difference does it make if the visual lights the fire inside of you? The day that I no longer got horny by watching two handsome men kissing ... mark that day as the one in which I want to stop living. Why does it matter what starts the process rolling? Some people need to bring something to read (or their phones) into the bathroom in order to relax enough to have a bowel movement, too ... does that mean the outside stimulus is "unnatural" and should be avoided? Or ... does it mean, that it's simply an aid to help trigger your body's natural responses in order to do something healthy and good for yourself?
I think that our wild(er) male ancestors were genetically programmed to be that way, triggered by what they see, because everywhere they looked ... there were sexually appealing partners, nude or in loincloths. Without organized religion and judgemental overseers that made all sorts of arbitrary cultural rules surrounding sex, I'm willing to bet sexual openness was a lot less dramatic, too (as in, if you look to your left, you'll see a couple "doing it" with no shame). To be turned on by what's taken in by your eyeballs was simply the shortest evolutionary route to making sure that the male gender was going to be as cum-ready as possible. If your species' survival depends on men with boners, how are your eventual genes going to learn how to trigger said boners? Probably ... when you visually recognize a situation in which you would get to actually USE that boner. :laugh:
Bottom line, when you do finally nab that cute boyfriend, his live, warm presence ... the sight of him naked in front of you, the smells of him, the sound of him, the sensation of him, is going to be the best "porn" of your life. Using porn to jerk off with is not a reason for you to worry -- you're not ruining yourself. Again, I promise you this -- I've had sexual partners from both genders in my lifetime (actually, even a FTM transgender), and I continue to enjoy porn alone (or even with my partners, if we both want to watch a little). I was always able to meet the need of the moment, even if I had fapped twice the night before to something on my computer. It's a non-factor.
In fact, my firm habit of making sure I cum at least once a day, and not fighting myself over it if I feel like more, is part of why I can do that. My testicle-testosterone-cum-factory is in healthy working condition, because I've exercised it enough to keep it that way (in my early 30s now). I can fap or fuck live any day I want to. This isn't a bad thing, friend.
I'm also not saying that I'm just a free-loving slut, either. I want monogamous love, just like you do, and I've had it before. I actually haven't had sex in over a year, because I'm recovering from a heartbreak ... but I'm about over it and ready to get back out there. No sex doesn't mean I stop cumming, though. I absolutely will NOT give up jerking off. I just don't worry about it if I'm meeting my sexual needs without shame in the interim moments.
Here's a couple of fun articles on what our closest genetic relatives, bonobo chimpanzees, act like to keep social balance and psychological happiness in their little tribes (hint: the key is lots of sexual venting, and lots of that sex is actually what we would call "gay").
https://psmag.com/bonobos-have-lots-of-sex-are-awesome-may-hold-key-to-our-past-d89e75f7d5a3#.j4w83hnwu
https://www.scientificamerican.com/article/bonobo-sex-and-society-2006-06/
And a video to a documentary on our sexuality, in which bonobos are mentioned:
Youtube Video – [00:40..]