Okay, yes, I'm old. I don't just like white wine-I like ice in my white wine. I collect cute cocktail napkins illustrated with flowers and farm implements. I only just discovered Lady Gaga. I really like BBC America. And I can genuinely list ‘travel' as an ‘interest.' I am, in other words, entering my later-30s.

I also like to write, and receive, thank you notes. No, not thank you emails-thank you notes. Those little folded cards or scraps of notebook paper that require stamps and the decrepit old machinations of the US Postal Service. And I am here to tell you: I am not alone. Other old people (like [...]