In one of Father John Krestiankin's letters, he wrote, "Who starts a family without his parents’ blessing? Who does not want to take into account the rules of the Church which state that between spouses there should be no more than five year’s difference, plus or minus, in age?"
https://orthochristian.com/7232.html
I don't know how I forgot about that, when I used to know a priest that would talk about that quite a bit.
As soon as I saw the thread title, I thought you may as well have called the thread "Paging Blade Runner", that's probably why he assumes you're trolling.
I think you're reaching here Entwife, while I'm in general agreement with your premises. The blessing of the parents is necessary of course, but as for the age difference, It would be nice to cite the canon, as I'm having difficulty finding it. And even if there is a canon, there's most likely many instances in which it can, and should be ignored. Canons in things like this are a warning, not an absolute standard.
As an unmarried guy in his mid 30s and I can also understand where Blade Runner is coming from. The system we live in discourages marraige, there are no alienation of affection laws and no-one wants to be run through the wringer of (no fault) divorce courts. As Camellia has pointed out, we don't live in the time in which you experienced your difficulties. Men have to be extra cautious, You can't just pull a "Paul the Simple" if your wife turns out to be unfaithful, the courts will drag you there and imprison you if necessary.
There's nothing wrong with encouraging your daughter to marry the same age. I would think the most important part (which I'm sure you're doing) would be raising your daughter in a way where she trusts both you and your husband's judgement. That way she'll ask your blessing prior to marriage. But at the same time there's nothing wrong with Blade Runner pursuing someone more youthful with good intentions. Hopefully God blesses both your individual intentions and you both find what you're looking for.