Retirement - will it be any fun?

Since my pension-pot was raided by the Govt and the retirement age was raised to near 70, I am concerned about leisure time in retirement.  I am almost certain that having a caravan and using it will not be sustainable in the frugal future I envisage.  I am not even certain that I will survive working until retirement! I'm sure they mean us to die in harness and reduce the growing older population.  I've a good few years left until retirement - but I wonder what other people think?