I think what we're actually seeing here is the generations de-coupling, if you like, with all the commensurate heartache, soul-searching and social change that brings.
It's not that this particular group of Baby Boomers people necessarily brought their children up single handed - they often took advantage of the extended family as well, as well as enjoying the benefits of a rapidly expanding post-war economy with good employment, pensions, reasonably well-resourced welfare state and so on. They were quite well placed, considering everything, which has freed them up for a long and enjoyable retirement (which indirectly the rest of us are paying for). In historical terms, this is highly unusual.
The subsequent generation has problems with long working hours, eroding salaries, high house prices, high childcare prices and pension insecurity, so will not have the spare resources, financial, time or emotional, to prop up their parents particularly well when they become infirm. That is the risk with de-coupling the generations and encouraging a position where every man (or nuclear family) is for themselves.
In terms of personal experience, I think my family refelects a fairly average position. We certainly were regularly dispatched to grandparents and so on, and my parents got a fair bit of time off, for example. They were also involved with their own grandparents, for example my mother went to her grandmother's every single day after school, and enjoyed doing that. However they seem to have removed themselves from the equation now and pursued their own interests instead of aligning themselves to family. This has the effect of fragmenting the remaining altruistic bonds instead of consolidating them.
It's a recipe for social decay, given that there will be no National Care Service to step in. So it's about more than individuals.