I think complaining about the rate of tax by itself is a bit like complaining that you spent £100 whilst out shopping. We need more information.
£100 on a brand new car? You got a bargain!
£100 on a pair of socks? They saw you coming, mate.
It's all about value for money and, whilst we think about it, affordability.
£100 to Lord Alan Sugar is not the same as £100 to the likes of you and me.
So, I am inferring that the OP considers public services to be poor value given current taxation levels.
If we make public services more efficient, we get more for our taxes OR taxes can be reduced for the same level of service.
I don't think anyone seriously argues for inefficiency for its own sake.
Therefore the argument is really over how inefficient the public sector and why that might be.
Go to a restaurant with £50 of your own money and you'll spend as much of it as you feel you can afford, knowing what you like to eat, how hungry you are etc.
Send someone else to a restaurant with £50 of your money and you'll not be surprised if you don't get any change back.
Go to a restaurant with £50 of someone else's money and you'll spend as much of it as you think you can get away with.
Send someone else to a restaurant with £50 of someone else's money and you won't really care what they do with it - this is how our public services work and why they are so inefficient.
It's efficiency that matters (or 'value for money'), not the level of taxation in itself.