I've been back on forth with holding DOGE. Like many others have pointed out, it is a very "popular coin" and has a good chance of being more mainstream than LTC.
Also pointed out already but I have to reinforce, whatever coin takes hold of everyday use will be the winner. Go into any city and ask 100 people what bitcoin is and I would be shocked if even 5 people could give you an explanation. So far only one of my friends knew, but only heard it is a crypto-coin. Beyond that, I have to explain where/how to get coins, why, how it is used, etc. They are not technology people though, I get blank stares and "Oh, interesting..." and that's it once the explanation is over.
Yet, you can go on reddit and people that are f*ckin idiots think Dogecoin is fun, cool, and innovative. That's why I think it will win in the long term. Stupid people who know nothing about crypto in the first place like it the most. I'm not saying all doge fans are idiots, just seems like more idiots are doge fans.
Personally, I only hold onto BTC, LTC, and DOGE, with the last being held only because I see possible real potential for common-use in society.