Cannot recommend doing it too much and try to do as much as possible on steam driven instruments and in as awful weather as your instructor is willing to go out in.
The experience is invaluable in the UK given the weather we get. As others have said it may well save your bacon. It has got me out of deep poo twice in the past.
One thing I would add though is don't deliberately go out into dire weather when you have got it. Use it to get out of unavoidable trouble not into avoidable trouble.
You'll be a better and safer pilot for it.