Tired Soul and Eco are pretty much spot-on.
As an ex-nuke, I would like add a few points for your consideration.
As has been stated: Get at least your private pilot license before making any big career decisions. If possible, get all the way through your commercial before making the decision to go for it.
It will likely take longer and be more expensive than you initially estimate..weather, schedules, and life in general.
However, in my opinion, if you can find a good Part 61 school that is actually invested in teaching you and getting you finished, you can control some of the money/time issues, IF you are committed.
Beware of the school that wants to keep you on the hamster wheel of pay pay pay...you're almost ready..a few more hours...maybe next week..etc
It can be done, but it's not always a smooth path.
ATP is expensive and the training might be at a faster pace than what you are used to as a nuke. However, you made it through Operator training and you're young, so you MIGHT be okay.
Good Luck Sir.