Is coming out worth it if there's a good chance I'll never get in a relationship?

Many apologies for the long post. I'm in a lot of distress and confusion right now. There's a TL;DR if you want to skip to that.After years of inner conflict and denial, I've finally come out to myself and accepted that I'm definitely a lesbian. There are several reasons why this was so incredibly difficult. The main issue is that I was raised in an extremely religious, abusive upbringing, to the point that I'd consider it a cult. I was threatened with excommunication - as in, being literally thrown out on the streets to fend for myself - if I questioned anything, even out of honest curiosity. The other issue is that I have a really low sex drive and am very shy, and that, combined with the abusive upbringing, convinced me that I was asexual for many years.Today I'm on my own and have moved far, far away, but I'm only out to myself at the moment. My family has mellowed out a lot, and I doubt they would excommunicate me if I came out to them. However, I am absolutely certain they would never see or treat me the same. Especially my mother. I know that she loves me a lot, and I do have hope that she'd come around enough to overlook it eventually. But I'm not going to count on it.I still have a low drive and am very shy, so I have never been in a relationship of any kind, and I think it's quite possible that I may never find an SO. The thought makes me a bit sad, because I'd love to find an SO someday, but it is what it is. It may happen, or it may not.Right now, my issue is this: in a case like this, would it be better to come out to my family and old friends now, or say nothing unless I find an SO? If I tell them now, it would give them time to get used to the idea, and maybe even accept me - probably not accept my orientation, but keep a more-or-less okay relationship. However, it could also backfire and badly damage our relationship, and I just don't know if it's worth the drama if I may never even find a partner anyway. Their scrutiny and possible fears that I'd "try to corrupt a good Christian girl" from their circle (which I WOULDN'T) would be almost unbearable, too.On the other hand, if I say nothing unless I find an SO, they may never find out my feelings. But if I do find a girlfriend, the sudden shock of finding out all at one time that I'm a lesbian, AND have a girlfriend, would quite possibly be too much for them, to the point that they never trust me again. It might cement the idea in their mind of "us vs. them," with the feeling that I was "taken by the other side." (With large amounts of blame on my SO, and I'd never want to put her through that.) At least if they knew about me before I found an SO, they might expect a relationship at some point and not be in so much shock about me having one eventually. If I do find a girlfriend, even in the best case scenario I don't expect our relationship with my family to be good. But it'd be tough to possibly never, ever see or speak to them again, not even just over coffee a couple times a year or something.TL;DR: If there's a possibility that I may never find an SO, would it be good to come out anyway as a way of easing the possible future shock to my family/friends? Or is it better to say nothing unless I find an SO, and avoid possible rejection for something I haven't even done yet and may never do? Have you ever been in a similar situation, and if so, what was your experience?