You seem the happiest person at work here Mike.
I’d be unable not to go for a promotion until about this year. Now I’m just weary and I’d think long and hard. It depends on the job.
What you don’t want, which often seems to happen, is someone else gets it who then tries to inflict themselves on you.
Hear them out Mike ,if it’s work you can handle easily then the less bosses you have all the better but if it’s more hours and hassle then you’d be mad to give up being in a comfort zone especially if you have plenty of autonomy in current role…
Go for interview Mike,ask plenty of questions at the end,whether it be weekends off,increased hours etc. Talk/discuss with your other half,add up pros/cons.
The lad thinking he can retire in 4 years because he has 300k set aside at 38 is leaving in dreamland.
The one bit of advice I’d give to people is to pay down the mortgage as soon as they can. Once the family home is secure you have great flexibility career wise.