Also another thing you hear quite often is: But isn't it expensive?
This is a very strange question, because all hobbies usually cost money and this is my hobby.

It's all about what you prioritize. Some people use up way more money than a month fees of five accounts just by e.g. going out one night. Or buys cloths more often due to fashion, or going to the cinema paying same amount as a month fee just to be entertained for 2 hours...