Golf clubs, cars, fish, in the end it doesn't matter. If you're asking what you should do? Do whatever makes you happy.
True. As example: I've never bought anything (over £20) I couldn't justify a practical use for in airsoft, but boy have I bought a lot of stuff I did not need.
The turning moment was having to spend £400 on boots to correct a disability, and another £100 on helmet/eyepro/mask. After that, a lot of stuff seemed cheaper than it actually was.
Those are the best boots I ever did wear, even if the initial product - magnum panther 8s only cost £40. I had never previously owned supportive boots, nor been able to wear wellingtons for that matter, so as a consequence of playing airsoft and paying that, I also got to play with mud this year. /end story.