Vitalik buterin the ethereum Co founder goes down in my mind as one of the smartest person and he doesn't very often endorse project so he giving a green light to dogecoin I would take it seriously
That's certainly true, mate. It's odd to see Vitalik endorsing another cryptocurrency project, since he's already working on a superior crypto named Ethereum. Despite Dogecoin's lack of development and innovation, it's still a strong cryptocurrency with a wealth of supporters around it. Not to mention, Dogecoin is highly useful for micropayments worldwide. I believe that's the reason why Ethereum's founder has shown a love for this old cryptocurrency on the market. His positive comments could be an indication that he's largely interested in maintaining the longevity of the DOGE blockchain.
The wisest thing Vitalik would do, is to either create an ERC-20 version of Dogecoin within the Ethereum blockchain, or create a bridge between both the ETH and DOGE blockchains for interoperability. He could also decide to hire a development team specifically for Dogecoin, in order to keep the Blockchain up-to-date. But even if Dogecoin remains as is, I believe that it'll be here to stay for a very long time.
Nonetheless, Dogecoin may be a hidden gem that's waiting to blossom someday. If you buy and hodl Dogecoin now, who knows if you'd profit in the future? After all, anything could happen in crypto land. Dogecoin could gain the attention of a new development team willing to make it great again by reducing the supply of coins in existence. Once this happens, then DOGE will be able to increase in price like never before making many early adopters wealthy. Or it could remain as is, being only useful as a digital currency than a store of value. Just my thoughts