Your question is funny. Some of us started bitcoin without asking such a question. Bitcoin is good and the technology behind it is a good one as well and might be of importance in the future. You can make quick transactions with bitcoin at cheap rate and you can also earn money by investing your money in it, but there is no guarantee that you will make a profit when you invest in bitcoin, it's all about luck. That's why you're being told to take the risks with what you can afford.

Don't put all your money into bitcoin with hope that you're going to make quick money and turn a millionaire the next day. Just invest because you want to invest and you believe that one day it will turn out for the better. You can still invest now since a lot of people are saying there will be a bull run, maybe if you're lucky the price will go up and you will make profit. It's just luck, when I started I wasn't even expecting the price to go up and it did. When my friend tried, it didn't work out for him because he invested at the wrong time. So, it's all luck.