Switching to coilovers instead of regular shock/strut maintenance?

Coming up on 100k miles in another year or so, and mechanic recommended to replace shocks and struts as regular maintenance(not required), but I was thinking of just installing coilovers myself. Idk too much about cars but I want to start getting into them and doing maintenance myself. I like the adjustability and feel of good coilovers so do yall think it's worth it to spend a bit more on them instead of just replacing with the regular system?