the 5% inflation is one of a few reasons that affects doge price
If I remember correctly, there was a period where the supply was fixed, right?
but doge whales / hodlers feel with fix supply, they don't get much profit
if only the supply is fixed & more doge adoption by merchants, the price more likely to rise and stay up
as of now, a few people use it for cheap way for transfering balance between exchangers
even if the exchanger charges 100 doge per tx (usually 5-10 doge), it is way cheaper than btc tx fee