I understand that feeling.
People involved in music have a "reason to buy gear" because they use it for recording and live performances.
If only I had that kind of "excuse," I could buy the gear I want without hesitation...
I know that feeling.
Actually, there are plenty of "pastime guitarists" out there—people who work in music stores or the industry, who love guitars purely as a hobby, without pursuing music professionally. So I totally get that feeling.
It's easy to overlook this, but the truth is, unless you're a professional, these actions—like buying gear—are done purely for the "hobby" of guitar.
Professional guitarists buy gear for their "work," but we guitar enthusiasts buy gear for our "hobby." It's for enjoyment, for our own pleasure. There are absolutely no restrictions or relevance tied to whether you're actively involved in music or how you use that gear.
Going on trips. Collecting watches. Supporting your favorite idol. All of these are important hobbies for the person doing them.