Sometimes you just hit a point where nothing matters, and you just want to avoid all human contact and shrivel away for months on end. Yeah happens to me pretty often, I'm just coming back out of one. Didn't do much, or any art during it but I'll be turning that around for the time being.
Also opening up commissions on my Ko-fi (https://ko-fi.com/tastyfigs), check it out if you like my stuff.