installing grease fitting on linkage

I've done it on a few bikes but wished I hadn't. Yes it's easy to get grease in there quickly but it sometimes pushed out the seals and the grease didn't always go to the entire bearing and when I did tear it apart the bearing was shot. Plus, you can't put a fitting on all of the linkage bearings (easily at least) so you'll have to remove the the linkage anyway to get to some of the bearings.

Now I just pull it apart more frequently and keep the seals fresh.