Forgive me for playing psychologist, but I'm detecting a bit of insecurity. You should internalize that you really are awesome & rare, as evidenced by the fact that you single-handedly created a high-quality product and sold it.
Examples:
> I'm (so far) a single founder.
Doesn't matter, you have a great track record. Yes, it's better to have a good team, so you should keep an eye out for teammates.
> nobody seems to think that I'm anything more than a code monkey
Sounds like maybe you haven't presented yourself as more than that to them.
> If there were some openings for "startup douche", I'd probably apply to those.
