Welcome silverhair2009!
Is this a mountain cabin or lodge type home? I know we had a little cabin in the mountains and it was all knotty pine t&g with open beam ceilings and my Hubby also loved it, but after 15 years of looking at it, I did get that wood overload feeling, LOL.
I do think for resale value you would have to find a buyer that loves all that wood.
Well, painting over it will not be easy and you will have to sand and prime it good first. The colors would depend on what other colors you have in the rooms, like furniture, rugs, artwork. Which, I have no idea of what you have or want to use.
Maybe you could make a compromise with your Hubby and use some colorful large quilts, Indian type rug, scenic wallpaper mural or large artwork on some of the walls or just paint one wall as a accent focal wall, say behind your sofa?
Can you share some photos with us so we can get a better picture of the rooms to give you some suggestions?