I feel pretty burnt out right now still. It's been like this for about 2 months. I'm still producing artwork and what not, but I've asked myself those exact questions recently. I started to doubt myself if I was still enjoying creating artwork.
But, I think it's because I didn't really take my normal break after finishing a comic book. I just kept going. Plus, I've been working on re-formatting my current series for mobile, which is taking a very long time and now I'm translating it into French, while I'm starting the new chapter and doing another project that's completely unrelated. Plus, on top of that I work full time as a web designer.
So, I thought about those questions for a moment and I assume that it's just the fatigue talking. Because, I want to draw and I want to continue my comic series and make illustrations, etc. I just think I need to rest for a bit.
Currently, I'm trying to not work on stuff every evening after work. I only do it every 2 days on workdays. And only do the big drawing projects on the weekend, when I can sleep in the next morning. I'm starting to see a difference and I'm starting to be less burnt out, but I'm not quite there yet.