If he wasn't interested in the job, or completely content, he wouldn't have gone to the interview.
Going along to find out what's on offer in response to being headhunted is not the same as being properly interested, or discontent with his current job.
Perhaps he was 'window shopping' - I am not interested in buying a different house, because I am content with this one - it doesn't stop me from finding out what's happening with the market c/o a lovely browse on Rightmove. Nor does it mean that the only reason I'm not moving house is because I'm "anxious about a big life change".
Maybe he's wiser than PP's urging him to accept the offer at face value. Maybe he's cynical about a 68% pay increase that purports to offer the same conditions. Maybe he has established that the reality would very different from the promises, or that the boss-to-be is an arse, or that there is a toxic culture of presenteeism, or he does not agree with their IT policy, or .... anything!
- because he was the one who attended the interview & was able to check all this out.
We weren't, we're not in a position to know. OP might know more, but she's not telling us - she's oddly silent about any of her DH's actual thoughts on the company itself, or his feelings at all really. Quite vocal about his potential earning power though. Go figure.
No one is saying he's irrational.
Then what was your post saying he needs to consult a "rational 3rd party" about then?
great working conditions
Are they?
We're not in a position to assess that. He is.
Isn't it much more likely that he is naturally anxious about a big life change, and so is trying to justify his hesitation with these reasons?
@PurpleMice, I genuinely can't understand why PP are insisting he needs to justify anything.
Is he even hesitating? - we don't know. He could be entirely gung ho with no hesitation at all, feeling he's better off in his current role.
I think OP's he's not sure he wants to take it could actually be him knowing damn well he doesn't want to, but attempting to soften the blow to his wife, who will obviously be disappointed.