I tried to put across my reasons for it - Elite is Elite. There's something zen about Super Cruise, Elite can be a very sedate game when I want it to be, or I can drop into a Res or CZ for some dog-fighting. Maybe I want to go jumping around on missions, or (like last night), take to Asp out to investigate the tip off I received about something 350 LYs away. Or I can Space Truck(tm), disappear off into the black and get my name on some planets, drive around a moon and look at the stars, or drive around an outpost dodging skimmers.
Elite is a game like no other, as I said earlier, it's an experience as much as it's a game really, and I do think that being able to jump from point-to-point would lessen that experience for me.
Maybe it's just a different experience for different people, and there's nothing wrong with that. When I play a game, and it has a mechanic I don't like, but other people do, I don't try and re-make the game for me, I understand that the game wasn't made for me. If I enjoy enough other aspects of the game, I will still play it, if not, I'll let it gather digital dust and play something else.
If you truly just want to be able to chill, then you'd always be able to.
I'm unsure why in system jumps would remove that for you - I mean, I do understand the basics of, if it is forced, then it is more powerful - but it sounds like your own experience wouldn't be harmed by it, but your general feelings about the game. I get that, I'm not sure it's a reason to leave an objectively flawed part of the game as it is with no improvements though. (nothing to do, which is being admitted by multiple defenders of long travel times, is objectively a flawed part of a game)