Nothing wrong with being celibate, just your motivation for doing it is wrong because you think you're not attractive enough for men. This makes me think you don't really want to do this but feel you have no option.

If you want to be celibate you have to have a change in philosophy on regards to sex. To completely change your mental state where if you never have sex again you don't care. That doesn't mean you don't have to have sex again, you just don't care if you do or don't and it is possible to think like that, but it takes time. If you're choosing to be celibate just to cover up insecurities then you'll going to be miserable. And another thing, you're a woman, and I noticed you mention you don't want kids, but your reason for it is because you think you'll be a terrible mother. If you genuinely think that then it's just as well you don't have children but I just wonder if this isn't another reason to beat yourself up over something.

If you definitely don't want kids and are content never having sex again the go ahead and live a celibate lifestyle. But I'm not convinced that it's what you want based on what I'm reading and if you don't really mean it you'll slip back into watching porn again. You'd be better off focusing on overcoming porn for now and not label yourself as celibate.