Dang I just turned 30 and according to this graph, I will be looking to spend even more time alone each year although I have two kids and a partner.
I think this could also be related to our culture shaping around modern technology such as the internet and social media. We're more connected than ever, but even more alone.
This isn't to say we're "lonely" in terms of community, but rather we experience our respective communities "alone".
I think our culture needs more people who point out that their love can be misplaced. When you're desperately in love with someone, it's almost impossible to see their failings. When you get enough distance however, you can see how problematic something can be. I think that applies to family, friends, coworkers, and even the technology we use every day.
It's a sad realization, but a realization nonetheless.