[z3t4]

Never risk your own money. But wasting time doesn't cost anything though. So make sure your expenses are covered, then go at it. And if you are having fun and learning stuff, then it's not a waste of time even if it fails.

But you probably don't want to do it alone. It's better to own 10% of something, then 100% of nothing. Also validate your ideas before doing actual work. For example do a kick-starter, or a signup-page, pitch the idea to possible customers.

[StriverGuy]

This completely ignores the true value of time. I would give up plenty of my own money for more time.

This is what drives people eventually hiring employees for their ventures and should not be undersold as a reasonable way to think about things.

[z3t4]

Theres opportunity cost. But you cant buy time in the past and you can not bye time in the future- only optimize it. There is only now!