Do you ever get lonely as founder?

Yep! When I first quit my job and went full time on my business, I buried myself in my apartment and almost went a month without seeing people. I joined a co-working space and am now much happier!

I have two little rugrats that solve that issue. This also gives me perspective and focus.

I really don't. I'm moderately extroverted, but I don't mind spending most my productive time by myself. I mostly keep to big cities, so there are lots of opportunities to socialize.

Single and a solo founder - so yes I do :)

I go through high and low cycles. For the last year I was working with a small team, but we could not figure our revenue model and now I am a solo founder again.

Co-working spaces help a lot. I am planning to travel more too.