In fact, it is never too late to start mining. But before you start to do it, you need to buy a powerful computer, or better several at once. Because the mining process requires a lot of effort and a powerful video card. I have a pretty powerful computer, but I use it only for work. I also use a raid system to work faster. Recently my cat spilled water on my raid, but I was lucky some guys helped me recover all data. This is data I've been saving for years.