Having been with NATS for 28 years, you will always have the "it's not what it used to be brigade", but don't let that put you off a career in ATC.
You will have to make compromises regarding holiday time, especially at smaller units.
I still enjoy my work and I think that holds true for most of the younger generation although it is noticeable that a lot fewer have much of an interest in aviation.
Good luck in whatever you choose to do.