I actually think the attitude that 'oh the pension probably won't exist when we're that age' is incredibly dangerous, and leads to people making bad choices.
It doesn't really make sense to on the one hand complain about how much current pensioners are being protected, while on the other hand assuming that by the time our generation are pensioners we'll be completely thrown under the bus by government and left to die in poverty.
I agree that changes will be made, ages will be shifted, but I think the biggest risk will be to people who don't take any steps- don't maximise their state pension, don't put what little they can into a private pension- and then when the time comes are in a terrible position compared to their peers. If you have anything to put aside, then a pension is still one of the best places to put it - as always, watch what the wealthy do: they're mostly maxing out their pensions. My parents, in addition to the state pension, have a small private pension of about 5 grand a year. It seems so small you'd say 'why would I bother saving for so little' but it makes all the difference in terms of holidays,
I try not to be too gloomy about it - we should be able to pay the house off in the next 25 years which will make us nearly sixty, I feel like with no mortgage/rent, the state pension and whatever small private pension we can cobble together will ensure we're fed and warm. As far as Ill-health and care costs go, it's too hard to predict: I try and take care of my health and luck and genetics will do the rest.
Most of us can't take steps to double our earning power, lots of people have very limited options to do anything but pay immediate bills, but for those in between I think it's worth looking forward and doing what we can. Also, being realistic about the kind of sacrifices that means- I am about to put off buying a car and re-start a pension instead, I'm lucky I don't rely on a car for work but most people who live where I do have one. If you have the money taken out before it gets your account you just adjust accordingly- again, not everyone can do this, but the 'pay yourself first' argument isn't all wrong. Not everyone can make sacrifices, but for a sizeable number of people they're just putting off the inevitable and buying the argument it will be as bad for everyone when the reality is it won't.