Im still buying altcoins to enlarge my portfolio. Altcoin season is most commonly behind the bull run, led by BTC. A significant amount of coins haven't reached their ath so far, even though they're performing quite well and experiencing a terrific development.
There might be some coins that won't be able to compete with the developments of others, meanwhile some coins are highly underrated.
I'm not putting all my money into allcoins, neither do I use big amounts of money at a certain time, even though this could gain even more. I personally prefer a savings scheme with a steady amount of Cash to put into, as I believe that growth will be happening
in the long run.