It's a bit of an ongoing thing, I replace bits and pieces over time...I gave my sister a 600d a little while back, so she gets a few lenses now and then and my stepdad has a 70d, so he also has some older lenses I have upgraded from. As it is now, I sort of have the whole range from a 10-18mm up to the 600mm, so lenses are pretty well sorted, kind of want to retire the 5dmkii and replace it with a 1dxmkii, but I need a better paying job first
I think too, sometimes less is more and you have a good range there
makes carrying things around a lot easier