Changing the tax on working people is one thing because they still have their working lives to adjust, work harder or longer or whatever.
Changing it for people who have already retired is different. They have worked all their lives and decided to retire, working out how much income they will need and a clear government commitment about how much they will get. You cannot change it afterwards when they have no ability to ccommodate the change. That's just not on.
At the moment there are people saying we will have to increase the state pension age to 70 plus in the near future for younger workers. The minimum wage is seen as "enough" to pay swathes of the population who are not only supporting themselves, but bringing up children and are much more likely to not own a house.
But you're saying its unfair to change tax on people who have had a lifetime to save and make provision, many of whom benefited from final salary pensions. There is always a risk of inflation, changes to VAT etc and thats the risk you take if you dont make provision in your retirement planning. (See it works both ways).
Where are the people who are currently working going to "earn more" ? Wages have stagnated for years, employers for the vast majority of roles are in a race to the bottom. There is starting to be compression in the salary between those who are on minimum wage and those who are higher skilled, who traditionally would have earned significantly more.
If you're saying well they could all go out and get a second job, great we will have people with young families working 70hr weeks and what impact will that have on society? Alternatively and maybe much more sensible would be for those who are retired and say under the age of 75 who cannot support their post retirement lifestyle, to pay NI on pension withdrawals
above the yearly minimum wage threshold I proposed in my earlier post i.e. £22,893, they could do a few hours a week to offset it. Note that according to the government guidance per couple for a moderate retirement (not basic) the joint income should be more than £43900 per year. The threshold I proposed would actually mean you would exceed this figure as a couple before NI would be payable.
If you cant tax the rich because they will go abroad, cant tax businesses because they will downsize, cant tax the poor because they are already have nothing, cant reduce benefits, the tax burden on working families is already the highest its ever been. Who is gonna pick up some of the bill for all the required spending ?
What we have is a situation where everyone wants things to be better but nobody wants to pay for it or have any impact on their personal wealth.