I had a bad experience trading DOT, and it was my fault for trading it when it was hyped and hard to sell. I think it was more than 5 years ago already. So I think DOT being in 20th place after all this time is still a good coin to have. It's unlike shitcoins that come and go when pumped and dumped.
It's better than other altcoins that come out. It depends on why you are investing in it in the first place. It's not a hotcoin anymore.
Actually its on #46 position if we base the CMC listing.
And to bad you got carried out by hype, but can't blame you for that initial reaction. Since we can't deny that Polkadot is so hyped before. Many look at it as one of promising coin exist in the market.
Now it seems that there's no much discussion about it, then many people who trades it before shift their focus and try other alts in the market.
Didn't lost something on Polkadot, but I think they are not ideal choice to deal with at the moment.