If you are like most people in the USA and much of the "developed world", you like to think it is possible to have it all: partner, children, big house, career of your dreams, exotic vacations, good health, etc. Substitute your particular goals as appropriate.
If I had known what it would be like to have it all - I might have been willing to settle for less.
We also like to think this way when it comes to the environment: big house big car, cheap energy, clean environment, there are probably lots of areas where we think we can have it all, but it is complete delusion, and the sooner we admit it, the sooner we can get away from "wanting it all", and on to "wanting what really matters to us". It is important to differentiate between these two concepts, because what really matters are those things we would give up everything else to have.