Relationship long term?

[Norzilla]

Ok talk to me ladies and gents. DH goes away with work from time to time and has done for over 20 years. Never had a huge sex drive ( him).
He can go away and neither of us bother texting or calling. We have teenage kids. We don't argue, no jealous accusations etc. Relationship just seems platonic, no real affection, just meh.
I don't really know why I am asking but after 25 years is it unreasonable to expect more from a relationship? I

Are you both happy with the relationship you have?

There's nothing 'normal' in relationships. If you're both happy then that's all that matters.

I wouldn't be happy in what sounds like a pretty disengaged house share scenario but we're all different.