The surprising value of bitcoin makes it difficult for us to invest, maybe altcoin can be a solution, investing in altcoin is the right choice, but if you buy bitcoin now, you may be surprised for a few more months, as bitcoin values will go up 
I wonder what make you think that it is hard to invest in Bitcoin and that altcoin is the solution? FYI, you can buy bitcoin in parts if you do not have enough money to buy a whole bitcoin. Aside from that, once you have a hold of bitcoin, it opens your door to buy altcoins. So I guess it is more beneficial to buy Bitcoin to have an entry point to cryptocurrency. Aside from that bitcoin is so far the strongest cryptocurrency among its kind.