When we think about investments we imagine investors with big sums of money, so for btc casino it would be 1 or more btc, for instance. However, the minimum amount you can invest is usually 0.01btc which is only 10$. Do you think such investments are profitable but you earn small sums or maybe they don't make sense at all? Can someone explain it to me?
It depends on the people investing. For people who are just trying out or have only small amount of money which they want to use to try and get profit, it is worth it. Even if it will take a while for them to make profit, it's the fact that they will still earn something from it overtime.
The amount doesn't matter to be honest, because not all the people that want to invest have a lot of money, most of them have only few, yet, they wanted to invest it to make it more, to grow it, so it makes sense for them, because that is what they have all got, and still they finds ways to have more money so that they can invest again, but, in a big amount of money.
Investing is like water cycle, the water's(money) evaporate and goes to the cloud(Investment site) and becomes rain(profit) and fall to the ground(you) and it will keep on cycling as long as you want, just like that, so "doesn't make sense" is not really appropriate for this, because it do really make sense.