Bitcoins price is set at whatever people are willing to pay for the bitcoin and it can be worth it to invest in bitcoin if you study up on it first so that you go into bitcoin trading and purchasing with enough knowledge so that you don't easily lose out in it.
In my opinion I would start out with purchasing $100.00 worth of bitcoin first and then go up from there.
Some people have come to realize their bitcoin purchase dropped to no value since they waited too long but you can still use that bitcoin to pay for online purchases even if you don't make much if any money back on your bitcoin purchase.