Anime is easier to consume because I often watch it while doing something else like homework or farming in a game or doing crafts irl. I can understand Japanese so I don't need to look at the subs to know what's going on. I also like the OSTs etc.
Manga...When you read it you have to focus on reading it. It has to be REALLY good for me to spend time on it - I enjoy reading a lot but my love are novels and short stories. Also when following current manga it's really annoying to have to wait a week/month/several months/year for a new chapter Not to mention relying on scans. I used to be a translator and I know how hard the poor scanlators work, for FREE at that lol so I'd never complain about that at least. Alternatively you read a manga after it's been out for a while and the hype has died out so there would be nobody to talk about it, which is the lesser evil imo. And third, some JUST GO ON FOR TOO LONG, like I ain't reading allat, geez....