I haven't 100% given up, but I've postponed it indefinitely.
When? For the past 4 years.
Why? For several reasons.
I started a company before (3 times actually).
The solo business was a slog, spending a lot of time doing things I hated to for barely enough money to feed myself, and with little outlook for growth.
The first VC-funded startup burned me out big-time. I'm not cut out for years on end of 60-plus hour weeks for a tiny chance at a large payout and a 98% chance at nothing. Especially given the opportunity cost of a senior engineer's salary.
The second startup I almost didn't do, but I was super passionate about the topic. Unfortunately, the team fell apart, but not before the stress impacted my health (permanently) - and the other things I learned from that experience informed the other major reason I'm not doing that again any time soon.
Which is that ideas are a dime a dozen, but good ones are rare, and marketing is HARD.
If I were to stumble across an idea I couldn't pass up, that would make a solid lifestyle business (no way I do the VC dance again) and that I could build in my spare time... ok, I might try again.
But starting a company and hitting it big areno longer part of my dream.
Instead I'm working on moving to a place I want to live, finding a 20-30 hour/week gig (be it contract or salaried work), and living a life that I can actually enjoy day to day, spending time with people I care about.