Same
I don't use schools, have never claimed benefits, don't use any social services, can't get an NHS dentist, can't remember the last time I saw the GP, am in good health so don't use medical services (I realise some of these are luck and are worth more than money).
I pay 40% tax plus NI plus Council tax, plus VAT (and any other taxes where relevant, e.g. stamp duty).
TBH I think more than enough of my wage goes to 'other people' and i don't get much back. What I want to do with the rest is up to me, so no I don't feel I should be putting more 'into the economy,' or to benefit others. If I buy something it's to benefit myself!
Most people aren't being frugal just to save for no purpose - they are not spending money on some things (often short term/luxury), in order to eventually spend money on something else (often long term/essentials).
Besides which, at SOME point it will go back 'in' anyway. Even if someone lives like a miser and never spends an extraneous penny, when they die those savings will either go to their named beneficiary who might very well spend it, or, if they die without a will and family, eventually be reclaimed by the government.