My partner enjoys the fact that these aren't meant to appeal to everybody. They have tons of genres and settings that you can pick and choose. She also enjoys that these shows aren't designed to appeal to the general American audience and tastes and give a taste of other cultures. For example, sex is less overt due to many of these countries having decency laws. (Think Hays Code for older American movies, some things have to be implied instead of shown)
I enjoy the fact that these show get a limited run of 10 - 30 episodes. The stories are focused and have less unresolved threads in the show. Compare this to modern Doctor Who, ST: Discovery, or Lost, where you have story details that don't get resolved for seasons, if ever.
If you have Netflix and want to try some more lighter shows I can recommend: Strong Girl Bong-soon, Love O2O (series or movie), and My Holo Love.