Do you mean I lose the CURRENT bike I have right now, or are you talking about if I bought a new bike and then lost it?
If I lost my current bike, I'd definitely get a road bike instead (current is a hybrid).
If I lost the road bike, well, at the moment, I can't imagine why I'd get a different one unless the reason for loss was somehow related to the bike itself. But realisticly I think I'd probably have a different idea of my ideal bike by then so I probably wouldn't replicate it exactly.