Nowadays I'm inclined to categorize any GAS I might get. I can generally fit my bass desires into one of the following categories:
- something that sounds significantly different from what I already own (fretless, acoustic, Rob Allen-style bass, etc.);
- something that will serve me in a practical-only sense (e.g., a specific bass for travelling);
- a bass that will help make me more employable (e.g., a Fender P);
- something with sentimental value (a bass that has I connect with a certain time in my life or with a certain person),
- something that I'm simply curious about or that I like the idea of owning for none of the above reasons.
Should GAS flare up the first thing I generally ask myself is, "Can I afford this?". The answer is usually "no" - at least not without selling something (or some things) I already own. If money is not an obstacle then I ask myself something along the lines of, "Will this new bass make me happy several months after I obtain it, or will the joy likely to be fleeting?". I can look at the basses I already own and ask, "Will this new bass bring me any long-term pleasure that these ones don't already bring me?". Then there's the question of, "Do I want another bass to have to maintain/make space for?". Of course, this is coming from someone with nine electric basses. If I had only one or two then the questions might not be the same.
There's a bass that's been in the TB classifieds for a while now that I have been ogling on and off. There's a degree of sentimentalism attached to that specific model (and era) despite the fact that I don't even like the company all that much. I would really like to have the bass (even though it is a four and I typically only gig fivers). I've told myself that these particular basses don't come up for sale very often and that I could use the bass for recording if not for live work. The price is reasonable enough but... Right now I wouldn't have the money unless I sold another bass (a process I don't want to go through at the moment - and probably wouldn't want to be bothered with even if it wasn't for the Covid-19 situation). I also can't help but wonder if the sentimental aspect of owning the bass in question would not be enough for me to feel my purchase was worthwhile in the long run. I also prefer to try before buying whenever possible.
Anyway, on a side note, Rob Allens are unique instruments and definitely fall into the "something that sounds significantly different from what I already own" category for me. I rarely play mine but I love having it in my line-up and would be very reluctant to sell it. I started playing upright three years ago on a whim and I'm really glad I did. If nothing else the process of studying upright from a Simandl and jazz approach has made me a better musician in general and a better bassist (including on electric) in particular. And a Rob Allen, as great as they are, just doesn't come close to offering the experience of playing double bass. I'd say don't let your age be the factor that prevents you from pursuing upright.