The good potential have only that altcoins that are useful for people.
Only such altcoins will be in demand in the future.
The demand in altcoins now is big and will continue to be big in the future.
There are now so many altcoins that investors now have a very big choice of different projects, tools and coins.
But the matter is that among this big choice there are a lot of scams. That is why it is very important to check everything not to invest money in scams.