One thing I learned from being asexual is that you're not the only one. No matter what it is, you're not alone in it. Since I realized this, I've been able to be more open (for better or worse) about how I feel and what I experience, because I know that someone, somewhere (if not the person I'm directly talking to) is just waiting for that subject to be shared.
But I also learned that you can still feel isolated even while you know you're not alone. After I realized I was asexual, I found many other groups of people that showed me I wasn't the only one. I found everyone from people who share my obscure learning disability to volunteer coordinators just as frustrated and neglected as I am. I found all these people through the internet, books, and in one case, a story from a third person: "Yeah, this guy I lived with graduated from your school, and sold used cars but hated it, so he quit and now he's been unemployed for a year...". It's interesting how at least in my experience, discovering these "people like me" is a big comfort in the beginning. But over time, as I rarely or never actually meet these people, it fades. Unless I do real-world, concrete stuff with them, their impact on my life (and presumably, mine on theirs) will become negligible with the passage of time.
It's easy to find people just like you online, sometimes in great numbers. But at least for me, these people have the least presence where I need them most-- in (what Douglas Rushkoff calls) "the former real world". As far as asexuality goes, I'm sure that comparatively, I see more asexuals in FRL than most. But am I committing some cardinal sin (like a sort of relationship-based gluttony) by saying, it's not enough? To me, seeing other asexuals is still a special, out of the ordinary experience. Can my asexuality ever seem totally normal and everyday as long as that remains the case?