In one sense, the fact that you can "keep fucking up and partying" is exactly what makes it the perfect time to be a startup founder. To paraphrase Jeff Foxworthy, you can lose everything you own and you're only out $15.

I'm 38 and I'm just now trying to get my own business off the ground, for an idea I had back in 2003. I registered the domain and ran it as a side gig, but there wasn't a viable business back then. Now SaaS and cloud services are more mainstream, there's a lot more potential to develop the idea. The only downside being that now I have to balance a family life and a career path along with it.