Most children would love a puppy, but if both adults aren’t 100% committed, then don’t, buy a hamster instead.
I don’t mean to sound flippant but dogs change everything and I say this as a devoted dog owner. I’ve owned dogs my whole life adult life, but they are hard work.
The training, the exercise (both mental and physical). Then the cost of insurance, vaccinations, food, treats, bedding, leads, collars, bowls, toys. Kennels or a dog sitter when you want to go away. Then you mention a dog walker, so the cost of that too.
Some dog walkers won’t take an un neutered male, so that’s also something to think about. Male dogs don’t have to be neutered and certainly not before they hit maturity.
I love my dogs, but they take up a lot of time. If you go out for the day you have to plan for someone to let them out, walk and feed them.
kennelling isn’t cheap if you go away.
Despite this sounding a bit negative, I can’t imagine life without dogs, but there is a lot to think about. And once you’ve thought about all of this, the commitment they need to, which can be 10 years plus, you need to research your breeder. Unfortunately there are a lot of sketchy breeders so you really need to take the time to ask questions & make sure they offer a lifetime of support and do health checks on the dogs they breed from