There is no point in playing games you don't like since 1) you won't learn anything and 2) you will lose faith in good games (this, however, isn't to say you shouldn't explore genres you haven't explored before.)
I actually would disagree with that. There's plenty to learn from games that you don't enjoy. This article
makes an argument about learning from bad movies that can also apply to games (As a note, the author of the article says this was said to him by Quentin Tarantino):
"And I mean if you want to do this for a fucking living and you're absolutely serious, then never hate a movie. You can learn so much about the craft from bad movies. I man you can't like fucking look at Kurosawa and be all "Oooh just do what Kurosawa did. You know, it's easy!" Fuck no! Bad movies teach you what not to do and what to correct in your process and that's way more helpful. You know how many feet of film I burned on this thing [MEANING KILL BILL] when I was trying to be like something else that was great? Like fucking Pole Fighter, like what you said? No, all the best stuff came out of me just trying to avoid mistakes."
Also, if you want to play all the way through games, my advice would be to pick a game (or a few, depending on how much time you can dedicate) and play it at least a little while each day. If you are playing multiple games in parallel, try to play all of them each day. This works pretty well for me (as well as for reading books).