My fiance wants to ask his dad to be one of his groomsmen. Although I adore his dad and understand they have a close relationship, I don't like the idea of it at all, for several reasons:
1) My fiance's parents are still together, why should his mother sit alone while his father stands up? They raised him together, and I think they would want to share this day/moment together, watching their son get married.
2) Everyone else in our wedding party, including us, will be between the ages of 20 and 29 (most under 25), and his father is 60.
3) His father already has a role in the wedding party, as FOG. Isn't that enough recognition for everything he has done for my fiance?
Typically I wouldn't mess with who my fiance wants as his groomsmen, but this is crossing a line for me. Am I being unresonable, or is there anything I can do?