Car audio is definitely a good inlet to more serious home audio.
It seems so innocent in the beginning. Car audio leads to home audio. Home audio leads to dealers, at first small time but then as you sink deeper only the high end dealers with the best supply can chase that monkey off your back. And not for long, as you’re so addicted now you’re main-lining Audiogon even at work, unable to sleep, always craving the next upgrade high. It never lasts. Eventually you OD on SET, hit rock bottom, horns even, tubes rolling everywhere, piles of records, until one day the cleaning lady finds you, drowned in a tub full of Groovewasher.
Music is the gateway. Just say no to tunes.