Financing has a total cost associated with it. If you have the cash to buy the asset, you weight that cost against the time value of money and against the loss of having access to liquid funds and make your decision.
The entirety of this post is one of the best I've ever seen on this or any internet forum. Debt is not an inherently bad thing. Also, money is fungible. Three months ago I thought it'd be a long time (maybe a year or two) before I'd be able to consider an NSX, loans on cars that old being in the 10% range. But by doing some reshuffling and shifting some funding sources around, I came up with enough to get an NSX, and the effective rate of interest on the additional debt is around 3% for 3 years. At that rate versus the time cost of money, it's a severe no brainer to just go get the NSX if that's what you want... and I do.