To me Lucas can be seen like the rock bands who always played the same music for decades: it can be sad to see/hear them now because they are not exactely the same on stage, indeed, but at the same time you can't really say to them to stop it. Because it's their job.

At one point they just realized they can't (or don't want) to do anything else. And this is happening to a lot of people in every day life, not just "famous artists" people.

So, you're free to go to the show, or to stay at home, but you can't say to them to stop making music or to not make one more reunion tour and to rest near their swimming pool instead. It's the music they created, they have the right to play it if they want.