There are certainly careers in which getting started at age 30 is unlikely to bring success (gymnast, child actor), but computer science/engineering is most cer

There are certainly careers in which getting started at age 30 is unlikely to bring success (gymnast, child actor), but computer science/engineering is most certainly not one of them. You may find that when you get out of school, you don't find a lot of resonance interviewing with 20-something year olds at startups, but contrary to what it seems like here, those people are the vast minority. It's also entirely possible that after finishing up a degree in CS you find that you don't want to actually work as a professional programmer. That's also fine (it's hard to tell what you might still find interesting in 4 years, and hopefully a big part of your education will be in gaining exposure to things you might not have otherwise thought about). I'd say if you find CS interesting, and have the ability to pursue a CS education (which not everyone does), than go for it.