"I’m fed up with being a net contributor and especially irritated by the “entitled to” website."
Leave. You are replaceable, no one earning PAYE salaries ( or even in fact the vast majority of contractors/small business owners) is of such rarefied skill that you can't be easily replaced. If you died tomorrow they'd replace you in a week.
Also, I'm dumbfounded how many of you so called "high earners" keep repeating all the points about being net contributors anyway. The figure arrived at only considers direct benefits in cash and in kind, it doesn't include any of the things provided by society at 0 opportunity cost (policing, rule of law, fire services, defence etc) which is actually most of what the government pays for. It also doesn't include the benefit of living in a society that has facilitated your earning power greatly. It also only uses income tax as a measure, not total tax burden, which of course, lower earners pay more of their entire income in.
Most people who threaten to leave do not, there have been studies that find this, they often also get rude awakenings when they realise that they are just not as special or important as they think they are when they can't instantly recreate the success they had enjoyed at home.
You are not the masters of the universe, you do not "carry" or " prop up" others. You are replaceable.
Don't let the door hit you on the way out.