A lot of discussions on forum are all about "what coin should I buy? Why?"
Here's the opposite - I want to ask what alts you would never buy and why so.
My example:
Never buy BTT, Tron, Stellar and other coins where the tokens are giving away with all kinds of airdrops. Why? Emission grows with no influx of investors.
Doubting about Peercoin. Hybrid emission system doesn't seem reliable too, though lately PPC began spreading itself via well-known exchanges (changheangel or changelly - don't remember).
+ Libra. Not sure if any explanation needed.
I never buy XRP(ripple) because this token is one of the centralized token were most of the whale investors controlled the price in the market.
That's why most of the time the community suffered when pumped and dumped happened to this coins they always cried due to their loss was not a joke too for sure, this coin are really good to hype the community traders.