Navy- help

Hey everyone, I've been going back and forth about wanting to go into the Navy or not. I have not taken the ASVAB yet. But I'm not in the best physical shape which I'm working on lol. My grandfather was in the navy (E-7 on fast attack nuclear subs) and he supported me in enlisting before he passed; specifically saying navy or Air Force!!! Hahaha (for civilian job purposes). My family supports the decision for retirement benefits. I'd like to go to further my education, travel, serve America, then the benefits like retirement and health care. I am not 100% sure of what type of MOS would be best suited for me. All of the experiences I've heard about are from the "old military" from my grandfather and my great uncle who was Air Force and my other great uncle who was a marine sniper. I've had a few cousins go into the army within the past 10 years but I'm not interested in the army or marines. If you are active duty in the navy or were, please give me your take on it and an updated outlook on today's military! I know everyone's experience is different, however, I'm all ears!