Was Bree and Keith's age difference THAT big of a deal?

Doing some math, Lynette says Bree is the same age as Rennee, and Lynette is the same age as Renee (or at least similar age), due to them being college roommates.

So that puts Bree at around 45-47. (Lynette said she was 43 when she was interviewing for jobs in season 5).

It was stated that Keith is 15 years younger.

Am I the only one who thinks this age gap isn't THAT big of a deal.

Sure, when it came to kids it was important, but even before all of that, everyone makes it seem like Bree is going after a 20 year old or something.

Also, I think Keith was just built different when it came to sex, man had sex for 6 hours, like damn.