in my opinion like this.
because altcoin is an alternative coin other than bitcoin, other than that the price is cheap and can be affordable by anyone. In this cryptoqurrency market there are many altcoins, but not all of them have great potential for future investment.
and what we need to consider is how the team develops their project, if the team can develop the project well or according to the road map they tend to produce good results too.
and altcoin are potential, usually they have big users, their trading volume is always increasing and has also been registered in the crypto or CoinMarcetcap market.
what about your views?
if you don't choose altcoin, where do you want to add the bitcoin amount to? while bitcoin prices go up and down. if the price of bitcoin falls then we must maintain the fiat value that we invest in, by trading it with altcoin.