Byron,
There is absolutely no reason most of us "need" a double rifle. However, we only get to go around once in life so enjoy the trip. You should get a double rifle if it brings you pleasure. Life is for living and living is made up of all the small moments we spend on activities we enjoy. I don't know of anyone who ever had their tombstone engraved with the epitaph "I wish I had worked more".
I have 2 double rifles and two SXS double shotguns and enjoy shooting them all. I shoot the doubles more than my bolt guns because they are just plain ol fun to shoot.
In regards to recoil, the 9.3X74R does have recoil. However, most doubles have stocks made to accomodate recoil and it is not as punishing as some think. Additionally, playing around and loading up some reduced recoil loads is a major source of enjoyment.
Get yourself a DR.
John