I say YES for quality ALTs with working teams and good vision. I think Cardano, Stellar are a couple of good ones!
What do you think?
In addition, I think you need to hold for a couple of years!
Definitely all my investments are for long term. I'm not planning to sell them for at least 3-5 years. And yeah, alts that have active team and development are a way to go now, of course should have always been, but seems like people like shilling "getting rich quick" more then steady grow. Oh well, it will all be alright in few years, just be patient.