How do you account for these GOP "conversion" experiences?

Today I see yet another news item that continues a pattern I’ve been noticing: Republicans reversing their positions on certain issues because they happen to have a family member who’s directly affected by that issue.

Senator Rob Portman of Ohio has now declared his support for gay marriage because his son came out as gay. Dick Chaney did the same turnaround awhile back because his daughter happens to be lesbian. Florida governor Rick Scott recently reversed his opposition to Medicaid expansion, citing his mother’s recent health problems as a catalyst.

I’m happy as can be that these guys have the guts to do an about face, but why does suffering have to strike so close to home before it becomes something that matters?