I have been alone for most of my adult life. No it is not good but I can't change the past. I am a little hopeful of the future though. How do I get by?
By not being exposed to what many others have. By not watching TV or movies that may bring out the desire to be with someone. By putting on blinders and not seeing what I am missing. Now this in no way is good. But it is less painful compared to being continually exposed to what you had and no longer having it.
I believe we can get by without intimacy. But it certainly is not a complete life. And when things go wrong with the few things in your life then there is little to support what may remain. You need to make sure you have enough other things that will help to fill your life.
Sorry for not being helpful.