Most people have the same reason why they buy crypto, that is to earn profit and to change financial to be better , although i dont not understanding how blockchain technology work but crypto and this technology has potential to change amillion financial's people in the world. Since Bitcoin created and tradeable in that times more milyuner was born from crypto.
You do not have an expert in the blockchain to invest in this market but it helps to have some knowledge about it since that will help you identify which projects are scams and which ones are real and could make you money in the the long term, take the time to understand and read about the subject, not only because it is fascinating by itself but also because it is probably one of the best investments that you are going to make in your life.
Since the profits you can get out of that knowledge are incredible, just look at all the money the early adopters got just because they were aware that the technology behind bitcoin was the real deal and it will change the world forever, that could be you in just a few years.