I traded dogecoin in the past. I've seen in my own experience how fast transactions are and the community around it is amazing. I actually converted SBD to doge to send them on poloniex. The Steem and SBD wallet is under mainenance for a while on that exchange.
Dogecoin is one crypto that in my opinion will survive for many years in the crypto market. Although it doesn't have a maximum supply the price can increase over time because there are a lot of hodlers and also lost wallets of dogecoin. Not everybody take it too serious unfortunately...