DP and I each earn around this amount so our joint income is over £120k. We are based in the expensive South East. I appreciate we are lucky and what we earn affords us a certain degree of freedom and choice that others simply do not have - ie. we live in a nice 3 bedroomed house in a decent area, each have our own cars (nice but nothing too fancy), eat out once a week or so, both have a few hobbies that we pursue and can afford a couple of nice holidays a year. We are also able to save something every month. Admittedly we don't have any DC yet so things may well change in the future. So yes in that sense I think £60k per year is a lot compared to what a lot of people have.
I do appreciate that we are in a much better position than a lot of people, including a lot of our family and friends. However, by the time we have paid our mortgage (over £2k per month), paid for our train season tickets to work (£300 each per month) and paid to run the cars and for all our other outgoings it does not feel like we have much left at the end of the month! So I can see why people who earn a lot sometimes feel like they are not so well off. However, I accept that we have made the CHOICE to have the kind of lifestyle we do, live where we live, have two cars etc whereas a lot of people simply would not have any choice so in that sense I do think we are well off. I would never complain about being broke, especially not in front of members of my family / friends who earn a lot less than us as that would be down right disrespectful.
I would also add that we do still have to be careful with our money, always look out for offers, we haven't turned the heating on yet to save money - so we are very careful about what we spend. £60k per year does not make you so rich you can go out spending money willy-nilly!
And we work ridiculously long hours as well, so what we have in money we sacrifice in time (although I do appreciate lots of low paid workers work long hours as well).