Well i do invest a lot in altcoins and i believe they will be fruitfull when blockchain are use and become common things, and i think when bitcoin reach $20k again i could be rich cause i invest on this project.
Depending on what period of time altcoin was purchased! Also, unfortunately, the market is dead now, and many projects are leaving the cryptocurrency market because of the high competition, where the competitor offers a more advanced blockchain platform! So if you are ready to wait, good luck to you!