Re: No, you don't wish you'd have bought it.
I sold off my Amigas (A3000, A4000T plus a lifetimes worth of Zorro cards) a few years ago to put a deposit down on a mortgage. It is a decision I still bitterly regret.
Presumably, if you hadn't sold them, you wouldn't have been able to get the mortgage? You made what seemed a good decision at the time - and probably WAS a good decision, in the grand scheme of things. Accept it, move on. Or do what you're doing, and restart.
"If only...." - the two worst words in the English language.