Hi I have been with my military DH for nearly 30 years now. Yes it was hard when our DC were young and he was away on tour in dangerous places. But he is the love of my life, and a wonderful father and we have a great life. Every type of marriage has highs and lows, the most important thing is that you find the person that you can live a lovely life with, that you can love and be loved by. I think enough PPs have defined all the downsides of being a military spouse.
We have never moved around with DH. We were not married for the first 10 years, so despite 2 children etc, we were not allowed to live in army housing. I had my own home and he moved in with me after 18 months. We then went on to buy our own home, and moved a few times. We have never lived on camp. When he was posted away he went away and came back on weekends. That was hard being apart (esp for small children) but it meant we stayed in this house, I stayed in my job, and the DC stayed in the same nurseries and schools.
We have my family nearby, so our support networks stayed consistent throughout these 30 years. I needed the support networks to help with working in a high pressure career and having small DC. As you say, they are away a lot anyway, so I agree, better to be at home near family than on a camp where you know no one.
When DH left the army he just came home one day - nothing else changed. For his colleagues who lived in army housing, on leaving the army they were looking to buy their first home at 40 years old, wives changing jobs, kids changing schools etc etc, we had none of that to worry about.
Living off camp means you see them a bit less, but you have that consistency in your life (and DCs). And if it doesn't go well, you are still in your own home. If you do decide to live with him on camp, you should keep your house and rent it out, so that you have that to fall back on if it all goes tits up.
I did not give up my career, did not follow him anywhere. I been the high earner for most of our marriage (but his pension will be better than mine!).
My DH is not racist, homophobic or mysogynistic, so there is no reason to think the army will make your bf that way.
Despite the hardship of being apart often, I cannot explain how amazing it is when they come back when you haven't seen them for a while. That is something my non military friends have never experienced. Its all pluses and minuses. If you are used to being on your own, I expect you will not find it a problem. These days contact is easier - we didnt have mobile phones etc so had little contact - I expect having more contact with facetime etc will make it a bit easier than it used to be.
TBH when they get out, my miliary wife friends have all found it hard to get used to their DHs being around all the time😆we all get used to doing things our way, and having a lot of time to ourselves - they are a bit underfoot when they first leave the army.
I hope it all goes well for you.