Has anyone ever regretted leaving corporate for a startup? Either as a founder/cofounder, or an early employee? I will not promote

Was at at f500 for 8 years, some years were good, some less so. Left last year to join a smaller (100 emp) company, but it's turned out not to be a good fit. I found that even at the smaller company poor executive decisions still frustrate me and I've been thinking a lot about joining an early stage startup or starting one myself. Lots of people talk about the amount of work a startup requires, but its usually said in a way that's proud and overall satisfied with the choice. I am wondering if anyone regrets