It has been around for much longer and for every car that has keyless entry. My BMW's were both recalled for a security patch in 2010. There is no way around these things as they can improve the security but technology will be out a couple of weeks later to over-ride the fix. Buy a car with a key, I would never have a keyless entry car ever again.
I suspect that soon you'll have zero choice in the matter, as the trend is towards greater electronic integration across the board, from telemetrics to operating control to ingress/egress/access control. I'd wager that in a decade finding a car without electronic entry systems, or with an actual key, will become nigh-on impossible for many manufacturers, but who knows?
In any event, not to flog a dead equine, but I noted before and I'll say again, thieves have been stealing cars since Henry Ford and Daimler's days. Far more cars with plain old keys get stolen than cars with KESSY systems. The number of thieves with technical skills to do this sort of thing will no doubt increase, but the old ways are still a hell of a lot more wide spread and will remain that way--until, as I predict, all the thieves have to become software and hardware engineers as manual locks disappear.
At that point, we're still back at square one, aren't we? People gonna steal yo shit no matter what you do.
Oh well, I'm sure I'll be fine. If it's stolen, I collect insurance money, so I'm not gonna sweat it.