If you're the sort of car enthusiasts that most of us on here would be, you can't consider it to be an investment (you'd have to put it in secure, deterioration proof storage to do that). We're classed as hobby enthusiasts, and all hobby's cost money (usually lots), so you just have to grin and bear it and be committed to the idea. Where we all fall down is that we change our minds and decide we want a diiferent or better car and that usually involves selling up to fund it, or because we can't keep it for one reason or another.

So enjoy what you spend, it's keeping you out of mischief.