Got into because there are so many of them.
A , actually MANY , wise collectors will tell you to never buy anything you don't like for the sole purpose of making money. That's a sure way to end up broke and unhappy with your purchases. Alway buy what you like as the first rule.
Except for the rare exceptionally good deal that comes by from time to time , real money won't be made on anything that is considered 'collectable'. True collectables you don't ever know are collectable till they become so. Then you can actually make money but the vast majority of the time even then , with the cost of inflation and current market values those gains are often subjective. For example , you bought a customs cue 20 years ago for $500 , today it worth $2000. How much is a new custom going to cost you ? $2000

at least. What have you really gained over 20 years of investment ?
I went thru the same thing with Harleys over the last few years and then muscle cars before that. Have a gain of $15K ($5K invested) on a classic Harley and then a new one runs $20k. Big profit huh ?
Same deal in cues , only worse usually as the cue market gets fulled with more and more custom cue makers biulding cues at or exceeding the quality of the old collectables. Why spend $10K -$20K on a high end colletable now when you can have a better cue biult for less by a dozen different builders.
So where does that leave you ? Collecting because you can afford it , cause you take pride in your collecting effort and the finacial investment you have made and/or cause it's a hobby like anything else.
Pretty much my thoughts on the whole thing.