when you went to buy bitcoin did anybody force you to buy 10000BTC?!!!
of course not, you can buy ~0.266BTC with that amount and in a couple of years when price is a lot higher than this your $2000 can only buy 0.02BTC for you. and since bitcoin is the only cryptocurrency with real long term potential that is my suggestion anyways if you want to do it long term (1-2 years).

investing long term in altcoins that only get pumped and dumped in short term is not a wise decision in my experience.