A combined household income of 90k is good. I don’t recall saying you don’t earn much (maybe I did?) just that you don’t earn enough to have everything you want. You earn slightly above average. This is good.
You seem very hung up on the fact that you have studied and you work hard. Care workers work hard. Your studying is compensated by being paid nearly twice as much as a care worker. Lots of people are university educated now.
I understand there are lots of things you pay for that you haven’t disclosed. I would suggest that these things are not ‘essential’ expenses, but for the type of things we pay for to support our standard of living. If they were essential, you surely would have mentioned them ahead of luxury expenditure you listed.
I would challenge you to think really hard about what your disposable income actually is, particularly if you genuinely believe those on benefits/lower wages have much more than you. Aside from your council tax, internet and dog insurance (permitted because you’ve already committed to your dog… and I love dogs 😄) and £50 for two phones what else is actually an essential expenditure? You’ve mentioned you spend 1k on food and petrol. This leaves you with well over 1k disposable income a month from just your wages. Presumably your partner has a similar excess? .
I suppose what I’m saying is I’m happy for you. Please be happy for you too. There are so many worse off - which you gratuitously acknowledge. Families can operate on half the income you have and still take a holiday. This is perhaps why the other poster suggested you were minted, because by comparison to half the working population (who also work equally hard) you are!
This doesn’t mean we can’t worry about how the cost of living impacts others less fortunate and be disappointed we can’t have all the luxuries we used to have. It’s human nature to feel a bit miffed, but to moan and describe it as ‘struggling’ or complaining we can’t afford luxury X, because we’ve spent our money on luxury Y and Z is a bit crass. You are entitled to this opinion, but I disagree with you.
I think we all worry about our children, but yours will have had better support than many. My son earns a modest salary and is saving slowly. Like his peers, he focuses on the lifestyle, experiences and travel that I could not have dreamed of when I was in my 20s. I am really happy for him. He hopes to get on the ladder eventually and if I had a household income of 90k I’d be looking at my outgoings to see what savings I could make to help him in the future, like you. My household income is less than half yours and we have been saving to help our son onto the ladder. Maybe the difference is he’s always paid for his phone/gym and accommodation etc from part time earnings, even when at uni.