As someone who made very decent money writing code at 18, and consequently did the 7 year plan for undergrad (several "I make big money, why be in school?" mome

As someone who made very decent money writing code at 18, and consequently did the 7 year plan for undergrad (several "I make big money, why be in school?" moments), I'd wholeheartedly recommend finishing a degree. It's absolutely not necessary for success, but circumstances change and not having one is severely limiting. Not only do startups have to make pivots, often a person's individual career must as well (be it to another type of career, moving to a more bureaucratic organization, etc.), and a degree is well worth it when/if that time comes.