You don't need to make a decision today, I understand your (wife/kid/boss/significant other) hasn't seen it or heard the great benefits you have. The best thing to do it to let them discover them for themselves. Why don't you take the (whatever) home with you for a day or two and get (his/her) opinion. That will give them the opportunity to feel good too.
We'll get together again in a day or two and talk about their experience, and maybe wrap this thing up. Does this make sense to you?