Don't get depressed. Many of us here have heard Bitcoin earlier than you but did we give up? No. We also thought the same thing as you but it was never too late for anyone to invest. Are you thinking that your $100 might not be enough? Because it isn't enough if you're going to take a look at the market price and it's unlikely that we're going to see it that low because of the movement that it has got from few years ago and with halvings and many adoptions that happened, you have to consider its growth.