Not necessarily, certain vehicles can only take so much abuse. A car or car based SUV, even with an AWD system (which, just because it says it's AWD doesn't actually mean you are using all four wheels), simply wont have the ground clearance or ability to tackle some off-road or even on-road situations.

Case in point, I hit a pot-hole at 25mph in my old Mazda and it was enough to wack the rear end out of alignment and bend the lower wishbone (which later caused my rear end to fail sending me sideways into a tree). With more ground clearance and a solid axel it wouldn't have caused any damage.

My cousin in her AWD Audi had to make a sharp turn to avoid hitting a deer and ended up running over a block curb. This ripped out the oil pan and filter, seizing her engine. Again, with some more ground clearance or good skid-pans it could have been avoided.

Neither of those are major off-road events, both (or a similar variation) could be easily encountered in a bug out situation. Like some have mentioned, having to drive over fallen trees, having to go over a curb to get around a stalled car, ect. I'd rather have a vehicle that I know can handle certain situations, than one I will have to pray it will. I'm not talking about driving around a rock crawling rig with beadlock tires, but there are certain factory features that would be desirable.

For example, most people don’t know that, without limited-slip or locking differentials, generally your AWD vehicle is only running around in 2WD (one front wheels and one back wheel gets power), but they call it AWD because any one of the four wheels could be the one getting power. In normal driving this is fine as it allows for better handling and generally it works fine to get traction in rain/snow. However, four wheels with power is better than only two wheels with power when there is a possibility of getting stuck.

Also, without a low range center differential it can be impossible to get up certain hills. Trying to do so could destroy your engine and transmission, or just get you stuck on the side of a hill.

It’s kind of a safety and comfort thing. A butter knife and a DR RSK are both knives, but the RSK is designed to handle situations the butter knife is not. You might be able to get away with using the butter knife for a long time, but all it takes is one situation where is doesn’t work to cause major problems. Deciding to take the butter knife instead of the RSK is a risk.

It’s always up to the individual to decide how much risk they want to take, choosing your tools wisely is part of that decision (which is why a lot of us on here are such gear-freaks).