The main reasons are:
- strong community worldwide
- 1-minute block times
- $0.01 tx fees (or less if you're stingy)
- merge-mining with LTC makes network more robust
- plentiful supply makes it easier to use as a currency
Having said that, I'm currently nearly all-in on $DOGE.
As far as I know, dogecoin is not the only altcoin that offers features that you have put in the list, which makes dogecoin not unique. And since it is not that unique, the chances of it to become really demanded and push price up arent really high. As well as dogecoin was already pumped numerous times. Do you think all of a sudden it will get pumped again or someone will again for that trick? Moreover ATH is no way near. So have you reconsidered rebalancing your all-in in other altcoin?