Polkadot is a very well Defi project, I think DOT has a great future. Lots of old investors Comparing DOT with ETH, BNB. Also, ETH has gas fees but the Defi project has no gas fees, innumerable people want free service, so if they have another option they will go with Defi obviously. Guys Polkadot has a good reputation, you can trust freely and I think DOT will cross $90 end of 2021. So this is the best time to invest in Polkadot.