This is probably a subject that is "all over the board" for cyclist. The spouse of some 50+ riders are great riding partners, some have a spouse that never touch a bike and most are probably somewhere between the two. My spouse has "played" with riding for a few years.
Recently my 61 year old wife decided to "get in shape". She started a good diet along with some strong exercise routines with machines and free weights. Her progress has been impressive.
Then a couple weeks ago she shipped her almost new hybrid off to her sister-in-law and came home with a full blown road bike. A Cannondale all carbon frame road machine. She now dresses in a complete riding costume and does not like to get ready to ride for less than twenty miles and a good climb.
One of the great parts of this change is that she says she now understands why I dress like I do. She understands why I do not like to just "tool around the park on a ride" and she understands why I enjoy getting home all tired, hot and sweaty from a ride.
How great it is to find a new riding partner.