This is a very hard one to reply to, but you have already pretty much covered my thoughts - almost exactly.
My 2 pence worth:
I have a desk based job.
I work for myself, as I was utterly fed up of being an over-taxed hamster in an ever spinning wheel of PAYE while employed.
My work is OK. I am based at home, so do not have to travel much and my commute to work is rather short and not very stressful. The issue is, I am not a desk-based kinda guy, but my work pays me far more than I could earn doing what I actually enjoy doing, which is far more 'hands-on' physical work such as smallholding. So I use my desk based job to afford us the lifestyle that we can enjoy on the weekends and evenings. If I used the basic maths of 'I can earn more in an hour than the hired help' I would never leave my office and would be utterly miserable, so I love cutting the grass, fixing the fencing, making pig arks, faffing around in the garden etc.
Despite what I have said above, I still pay people to help me around our farm, as there are jobs they simply do better, or have heavier duty kit to deal with things easier than I could.
I tried to strim the grass and weeds down the sides of our driveway the other day and after 3hrs of fruitless revving, I gave up and asked the local chap to cut it with his flail mower, which would take him just over an hour. I would have rather spent 3hrs planting veggies or fiddling around doing something else than getting annoyed, frustrated and bitten by horse flies to save a few pounds, but saving money was not the reason I did it, which was to just get it done when it needed to be done!
A fencing contractor does a MUCH better job than I can, so we use one. We are still waiting for him to turn up though, despite booking him in February.
We have been trying to get our boiler replaced for the last 11 months and are still waiting(!). If I could do it myself, then I would as I am fed up of waiting for unreliable plumbers.
We use a 'man who can' for our large chainsaw/felling jobs as he does a great job, has all the kit and is very reliable. I don't save any time though, as I am constantly answering queries, seeing how he is getting on, or making tea, but that is much easier work than the hard graft he is doing!
We know we will probably never make a worthwhile profit out of the farm, as it is too small to be commercially viable, but I am sure we can make it pay some of its way when we have hatched our cunning plan for farming success.......
Time is not an infinite resource, so we have to do as many of the things we enjoy (while still making enough money to pay our bills).
What value can you put on happiness. It makes me smile every time I see my wife in the fields with her horses (at home rather than in a rented paddock miles away) and that is utterly priceless.