I think you misunderstand my post.
I do pay into a pension. I haven't opted out.
I paid into a pension when I had a good career for a few years. I had my children amd left work to raise them for a while supported by my partner. Things went wrong. He left (very unexpectedly).
My plan was to return to work when my youngest started nursery, when the relationship broke down, I couldnt.
Once back on my feet I started work again, but couldnt return to my career when on my own with the children.
Since being in work I pay into a pension. Its a meagre amount a month and im not young so time is not on my side.
I have managed to keep a mortgaged roof over my children's heads, clothe them, feed them, save for emergencies, run a car and not get into debt. There was nothing spare to put more into a pension.
Years on from that, I met my DP. I can now save £100 a month to take them on holiday.
Apologies if it is not on my radar to take that extra £100 a month and put it in my pension.
I do understand basic maths and I know how to use a pension calculator. Which I have done. The money I contribute from my salary til I retire wont get me much. Id need a hell of an income to do that. It might happen in the future, who knows?! But my youngest is only 6 and needs me around. So I stay where I am for now.
I work hard. I haven't opted out of anything. There's no need to be so rude and make assumptions that people are thick.
Life isnt linear nor does it go to plan. If my girls dad had stayed, and id gone back into my career id have a very good pension pot now among plenty of others things....I wouldnt be worrying about £100 a month saved for 1 holiday thats for sure!!!