Not just safe, buying Bitcoin is investing in both:

- Future technology
- Best Digital Asset with the most return in the human history
- Most calculated/mathematical concept
- Decenteralized
- & much more

It's better than investing in Gold, Bonds, Stocks. And all this is fact but I would ask you to take it as my personal opinion.
Before you begin investing, make sure you understand the Bitcoin Cycle and how it works. Good Luck!