That's how I wrecked my previous car - a VW Golf II TD. After 3-5 months it developed all sort of odd problems like refusing to start easy when hot (damaged piston ring), bad injectors (it sounded like a T34 after every long 500Km+ road) and so on.

The Mercedes only stumbles and clatters like hell when cold. I only go faster when I start it in a supermarket parking and I have space to run it around for a few minutes before going for the main road. It has a pretty steep exit and I don't dare to attack it with a cold engine anyway.

The problem with starting right away is that no one is willing to wait for you to warmup your engine in traffic, especially during rush hours. Sometimes you have to rev it within as little as 2 minutes from starting.