Dogecoin gave a more relatable and funny face to crypto, and that augmented awareness for Doge and crypto in general. It also helped explain what the hell this stuff is. It was all over the media at the time.
DOGE is an investment in the playful spirit that nourished the early developers and adopters of cryptocurrerncy. Sadly, that smiling spirit has been largely replaced by seriousness, anger and dry self-interest.