Just to add commentd to the above. Carbon will crack if exposed to extremes that would severely damage steel frames (ignoring the nay-sayers and their rumors of exploding carbon).
If it does break, you are done. You can actually send it away for repair, but for a bike in the range you are talking, it could cost as much as the bike.
Aluminum is also usually toast if broken.
Steel can be repaired in more places than carbon, but it is also expensive... You basically have a custom builder replace damaged tubes.
For minor tweaks, a steel frame can be realigned. Typically not aluiminum, and I don't know about titanium.
I ride steel and aluminum.