Honestly, part of the reason it might be depressing is because of fucked up messages and misunderstanding that folks have around the spectrum, so we pick up those messages ourselves. Those messages might even be part of the reason we don't know what's going on for a long time - because we don't necessarily see ourselves in those stereotypes.
For example, lots of rhetoric around autistic people used to say that they couldn't feel emotions or connect with others. Later wisdom and talking to other autistic folks taught me that it's actually that many autistic folks are feeling so much that it is overwhelming so some of the surprising behaviour is folks trying to block out some stimulation. If you're feeling everything all the time and can't filter it out, it can be so overwhelming that you can't isolate anything and just try not to feel at all.
Every individual on the spectrum is going to be different. There are ways in which you will have challenges that also corrolate to the ways in which you are exceptional and extremely talented. I'm highly emotionally intelligent but that skill also means that I'm really sensitive to the point that it affects my body physically because I can't always filter things out.
Also, some of the best relationships I've had have been with other folks on the spectrum because the way we relate is very validating and nurturing to me.
My current partner is on the spectrum and it's a joy to not have to apologize for my weird behaviour. As long as we respect each other's boundaries, we can be as neurodivergent as we like and it doesn't cause an emotional rift.