My close friend DINK with Wifey and very happy, amazing spending power Sia. Live in Orchard Condo, drive BMW, all meals settled around Orchard.
Both high income and no kids so can spend money earned on themselves and giving parents allowance.
I have 2 uncles/aunties who are DINKs, 1 live in orchard condo, 1 live in bukit timah landed. Both retired early in their 40s-50s, enjoying life traveling around the world, gardening, doing sports.
But my parents and in-laws are retired too and doing the same thing, the only difference is that the DINKs retired earlier. So have kids doesn't mean you can't enjoy life, it's just delayed slightly.