Behind these off-putting elements - some of which it could be argued are central to the experience of playing a JRPG - there can be a lot of value, depending on the quality of the game in question. Persona 4 Golden is my personal Best Game Ever, and I could ramble on for quite some time about a fair few Final Fantasy's. It makes me feel a bit sad that the above issues could (very reasonably) put someone off ever delving into the genre.
If there was ever an entry-point, a catalyst for more interest in games that many find so impenetrable, I believe it is Ys Chronicles. This Steam bundle contains the first two games of a long-running series that has seen endless rereleases, remakes and enhanced reimaginings. I finished them in a total of 18 hours. There are no random encounters. The combat is real-time and could not be played while sleeping. Grinding is almost entirely unnecessary. What's more, Ys and Ys II are exceptional games and they do far more than just stand the test of time. They're easily some of the best 2D games I've ever played, and I want to let you know why you should check them out.