Would you sacrifice five years of your life if the odds of a financially independent exit was less than 10%? Less than 10% of startups succeed, and that's before breaking that cohort into startups that barely succeed and ones that'll leave you independently wealthy.
I guess the alternative is to learn very little, have fun, run up huge debt, because why not, you're going to get run over by a bus tomorrow. But, then you don't. Well, crap.
Go ahead and postpone life then, no one will stop you; life still doesn't give a shit about plans. You should try being close do dying a couple of times, that will align your perspective with reality in no time at all.