We sat in the garden and watched a robin flit in and out of the ivy covering and olf tree stump. It was delightful.
However, we also spent two days last year, removing loads of it from a fence because it had grown far too high and thick, and smoothered other climbers.
So if you need to cut yours back, then go for it. No matter how hard you cut it, you wont kill it, nor is it harmful to work on.