Truth be told, Bitcoin is illegal in a lot of countries but trust me the same people that made it illegal are still siphoning money through bitcoin. It's simply difficult to trace your transaction. I think the other question to this is "is it too late to invest in bitcoin?".. Bitcoin already is a good investment for early investors. I can't say for those wanting to go into the market today
Bitcoin is designed to pump forever, so it is never too late to get into bitcoin, as long as your investment time horizon is 4-10 years or longer. So if you are at or near zero ( a low coiner or a no coiner), for your own good, you better get off of zero.
If you are not sure how much to buy or how to start, then just start slowly and do what you can to both build up your BTC position and to reach whatever target that you are aiming for.. and furthermore, if you are not convinced that bitcoin is a good investment now, as compared with historically, you are likely going to need to continue to engage in learning practices, while you are building your position, so if you end up starting with a target that is more on the whiimpy side of the 1% to 25% initial starting range, after a while investing and continuing to study the bitcoin matter, then you will likely be better able to hone and/or tailorize your own approach to your own circumstances.. but starting off whimpy is better than not starting.. while you attempt to learn along the way, too.