It really depends on the genre/song. Some songs it's impossible for me to discern the lyrics of without reading them. That's applicable to me for some of the metal I listen to, as well as some of the songs I listen to that aren't in English. Other songs with genres like indie folk are much easier to discern the lyrics of, and the ones I listen to often have lyrics with a bit more depth than other songs and genres. I don't really do one over the other due to the variety of music I enjoy, but I do really appreciate a song with well-written lyrics. Songs that have lyrics about certain things I find reprehensible I can't really enjoy if I can understand the lyrics regardless of how good the other instruments sound.