I gave up playing golf about the same time I bought my current Jeep. I've also been married for 22 years and my wife and I have always kept our separate banking accounts, etc. So, while she might say something like, "Oh, I see you got a new driver..." or, "New putter, eh?" She never really meant much by it.
Spending the same kind of money on the Jeep doesn't elicit a single word from her. Know why? Because she experiences the Jeep and occasionally, I'll give her the keys. She owns a Lexus "SUV" (the " "" are on purpose, because who really goes off-road in a Lexus?) that I can never seem to get comfortable in even though the seats can be adjusted with about 5 different buttons.
She has her vehicle and I have mine, but the bottom line is I can spend money on the Jeep and not get the comments I did when buying golf clubs. Besides, my golf game got to a point where it didn't matter what I did or spent, it wasn't getting any better. I can always make the Jeep better.