I am not sure Dogecoin has any practical use outside of what it is currently heavily used for, and that is, as a medium of exchange. 

Due to it's low transaction fees, and fast transfer times, it's convenient for use on many of the current exchanges. 

I've had my eye on Doge for about a year now, and I like that it's a relatively stable coin, with a predictable trend. (At least for me it's been predictable). 

I've been successful using Dogecoin as a day trading coin. During pumps, if Doge is low, I will typically trade volumes of other cryptos over to Doge, when when the others dip, I trade back. This has not amounted to huge gains, but gains nonetheless. I had a feeling about this current Doge pump, but ignored it, and missed it on a nice gain. I was lucky enough to make a small profit though. 

I personally would not buy Doge right now. I would expect it to dip back down some from where it's currently at, but this is only a guess, and not based on professional context. That being said, I'm not a professional, and this is only my prediction based on Dogecoin's past behavior. 

If you do decide to buy right now, I wish you luck and prosperity!

To the moon!