There are many ways of spending bitcoin at this moment, bitcoin can be used in the saving and investment sector, day by day Bitcoin is becoming an important and acceptable currency across the world, also its value is increasing at a same spirit. So bitcoin will become an important asset in the future...
Do it according to your wishes and wishes. If you want to get rich from bitcoin then you have to keep working on getting as much bitcoin as possible. You can start growing your bitcoin with trading, investing, etc. That you can do with bitcoin.
You are right, there is hundreds of domains that allow you to grow your bitcoins, For example:
-Trading, which you should learn about it, and make some experience and then you can be a successful trader.
-Services, present your services which you have skills on it like, coding, designer, developper etc..
-Signature campaigns, You can earn some bitcoin by enrolling in campaign, but you should rank up your account and make a high quality posts.
-Gambling, which it's the worst way to get some btc, because it's too risky and only lucky peoples who can win on it.