Wow, I am pleasantly surprised at the amount of positive comments on this subject
I myself am 20 and still suck my thumbs. I used to do it every time I would sleep but since I started college and started sleeping in the same bed as my boyfriend, I got into the habit of trying to hide it, so it only happened every so often. When our relationship got more intimate in the way that we starting having deeper conversations and confiding in each other, I finally felt comfortable to tell him. He was the first and only person that had known about my thumbsucking, besides my immediate family of course. He was very accepting of it
I was always afraid that people would hold it against me and tease me for it or think of me differently. I don't do it during the day, usually its just occasionally when I'm asleep. For me, its always been a comfort. If I'm stressed out or upset, sucking my thumb just relaxes me and makes it all go away for a while
And as for the tooth damage thing, my teeth are perfectly straight and I have never had to have braces or correction of any kind. As for my thumbs, they're pretty much normal looking also. The only thing is that if I've been sucking on the same one for a long amount of time, which is rarely now since I don't do it as often compared to a few years ago, my teeth may start to cut into the skin on the knuckle of my thumb. It's really not as bad as it sounds unless I get something in it that can start to sting. It usually heals within a day or two if I don't bother it. My parents also tried to stop my habit when I was little by putting stuff on my thumbs or painting my nails with nasty tasting nail polish, but obviously nothing ended up working, so they eventually just accepted it. It has never gotten in the way of any aspect of my life, so I don't really have a reason to see it as harmful or stop doing it. And if my future children feel the need to suck their thumbs as well, I won't object or try to stop them as long as their teeth are healthy.
I really appreciate everybody that has voted and/or commented and I just have to say that everyone's positive comments have made me feel a considerably more comfortable with sharing my 'secret' with more people. Thank you!!! And feel free to share more comments and stories and if anyone has any questions, don't hesitate to ask me