The number one rule if you have a family is that your spouse has to be 100% behind you. No doubts that they will be able to cope. Because at the end of the day they will be the ones keeping the household together. Picking up the kids from school, doing the parents evenings, Mopping up the tears and the tantrums while you are at work. Your hours are long and irregular and there is virtually no set pattern. You live your roster month to month. And even if you do split up, which is a possibility, they will still be dependant on your roster until your children are 18.
The he job is great, but it’s just a job. Make sure you have a life outside of work.
Its also has its family life benefits. I’m the only dad that regularly can drop my kids off and pick them up from the school gates exactly because I have that irregular shift pattern. Not always, but very often.
The job is like any other. Some days are good some are bad and some are downright awful. Most of the people you work with are great, because you all understand the job. Some are absolute idiots, but they are thankfully reducing.
Get your our life out of work sorted and keep nurturing it.