So what is the purpose for my wife and I to go out on a date after 30 some years of marriage?
I agree with mandym. It's something relatively new to "date" your own wife and the intention is to keep the fire going and keep remembering the feelings both felt during the time they spent falling in love while they were initially dating.
I can tell you now that if my husband went on a date with a female, he'd be endangering our relationship. I'd be suspicious that he was cheating. If he went on a date with a man, I'd just be plain skeered!
The reason? It would bring up doubt about intentions.
And that doesn't just hold true for married couples. I see many teens dating, kissing, holding hands, giving a piece of their heart to the person they're dating and quite often they are NOT in the mindset of marriage. Where and what does that leave for their future spouse? It's really not fair to the future spouse to have to walk about running into people their spouse has previously given part of their heart too and possibly kissed and had romantic feelings for.
It's just not appropriate. True, not all dating relationships will work out, but the purpose and intention certainly isn't just friendship. If a single person wants to go out with someone of the opposite sex just for fun and companionship, they still should exercise TONS of caution to prevent gossip, misunderstandings, and other pitfalls. It's just plain old good sense to do such or to simply not do so at all.
I've talked to boys who insist they're just "friends" with one of my girls. Taken away from her and from their friends, EVERY SINGLE ONE has admitted they felt attracted. Every one. (well, except for a couple who are gay and not attracted to girls anyhow)