Is it too late to invest in bitcoin? Is it a bubble?

The answer is: NO
You’re not the only one who has this feeling. As someone who got into cryptocurrencies 2.5 years ago (It also seemed too late back then), I think you shouldn’t spend your timing regretting on opportunities you missed.
Instead, you should make your first step ASAP and learn by getting involved.
What should you do?
Stay tuned - Read a lot about the different crypto-currencies and try to catch up with the latest news.