You are also forgetting that it isn't just your sacrifice in terms of the time you are giving up with your wife and children for three months, but also that you are forcibly restricting them from being able to see you too. They didn't choose that.
Once you have a family you have a bunch of responsibilities and you've signed up for life. You can't just pick and choose when it suits you.
I realise that there are a lot of young folks on HN and probably not so many parents, so I'm expecting a barrage of down votes, but maybe in ten years time when you've reached my perspective you'll come back and upvote me!
But I think for you it is clear that family comes before business. Which is a fine personal choice for you, but is it the kind of choice people putting their money in your business want to see you making?
(And yes I don't have kids or a wife.)
βHe who would accomplish little need sacrifice little; he who would achieve much must sacrifice much. He who would attain highly must sacrifice greatly.β
My point was that in this scenario, you are forcing sacrifices on other people whether they like it or not through your actions.