This is so true and when a man finally allows himself to take another man's cock into his mouth and sucks on it, he almost instantly realizes how enjoyable it is to be doing so. Feeling his cock growing and hardening within your mouth inspires you to keep going as he verbally expresses his satisfaction with words, moans of pleasure, and slowly bucking his hips as you engulf his cock. You pleasure his cock and balls with your lips, your tongue, and your mouth wanting to bring him to orgasm and when his cock begins to twitch inside your mouth and you feel his cum spurting inside your mouth you swallow each spurt keeping a firm grip on his cock with your mouth until he's relaxed his body to slowly milk out every drop of cum he's got to offer. Yes, it is an addictive thrill for sure because once you experience it you want to experience that thrill again, and again, and again. You've evolved into a cock sucker, and you are proud of yourself for having done so. You've realized that doing what many people consider to be forbidden is one of the most enjoyable things you've ever experienced.
Well done, @LowHangers, you've captured the experience of the male cocksucker perfectly! I feel so sorry for the majority of women who just don't have this in their DNA. But we guys (and I believe all men) definitely have not only that cocksucking gene, but the cocksucking addiction gene to allow us to enjoy it the way you've described. God, it's great to be a man!