FAANG to Founder

Hi HN! I'd like to get some perspective from the community here.

I'm currently working at a FAANG company making a very comfortable income (500k+ total) with good work life balance and I think good career prospects. I've wanted to do a startup since 10+ years ago, but have not done it for various reasons. Now I have enough financial cushion that I don't have to worry about money for a while and it feels like the right time to take the leap.

The problem is now I'm not sure if I want to. Maybe it's getting comfortable in a cushy job that pays well. Maybe it's me getting older and less ambitious. Or I just had a fanciful view of what startup life was like earlier on. Realizing that startup life is going to be a lot of work and stress and if all goes well a long slog, is making me doubt myself.

For those of you that have gone from a high paying tech job to startup founder, what made you do it? Do you regret making the leap?