People are natuarally drawn to the 'life is to short to do X' line of argument. But is it really? I'm in the middle of a startup, following my dream so to spe

People are natuarally drawn to the 'life is to short to do X' line of argument. But is it really? I'm in the middle of a startup, following my dream so to speak, meanwhile putting off my career, and not taking VC. If it succeeds, great. If it doesn't, I'm 3 years behind where I could be, an opportunity cost, and I've lost a bunch of friends and family money. Life is too short to be miserable all the time, which is sometimes what I think the 'life is too short' line of argument is all about - making people feel miserable if they aren't living up to some exalted paradigm of meaningful existence. Sometimes I wonder if my day job is really that bad or if I am I just being made to feel miserable b/c of some appeal to an aspect of human nature that will forever be restless.