Yes Bitcoin is expensive and I completely understand the dilemma people face while buying Bitcoins as I have been through that phase too.That is to buy or not is the question ?

Bitcoin is the most valued crypto currency and the currency with the highest Return on Investment (ROI). And as great entrepreneurs say with higher risk comes higher returns , what I suggest is invest whatever you can in Bitcoin and you will not regret your decision.

While other currencies will reduce the risk as the volatility of these currencies is less but that will also reduce the Returns that you will get using these currencies .

I hope I have answered your question!