This is such an interesting thread! I am the "child-free" life that some of you mention. Mid-30s, had time to focus on our careers so joint income is good, flexible jobs (working from home, holiday time etc) that allow a long-haul summer holiday of a few weeks, a few city breaks and a ski holiday a year, time for hobbies and sports, looking after our health and fitness, going out for dinner/lunch/ drinks most weekends etc etc
But it is only over the last year or so I have allowed myself to start properly enjoying my life, after 4 years of unexplained infertility. Before, I think I was just kind of filling it with these things to fill the baby-shaped gap in our lives.
I think the grass is always greener on the other side and the key to a happy life is finding enjoyment and contentment in your own life. Easier for some than others and I definitely appreciate this.
From the thread, it seems like most of us are happy with our lot, with perhaps some coulda/ shoulda/wouldas! Mine is that I wish I had never even started with fertility investigations and "accepted my lot" at a much earlier stage, because I am where I always would have been anyway.