I just got a Mac Pro and a Samsung SA950 3D 23" monitor?

I'm used to always using a Mac monitor where you can turn on your computer by pressing the power button on the monitor. I got off the phone with Samsung and they said their monitors will not turn the Mac Pro on. So is the only way to turn on my Mac Pro by pressing that button on the front of the Mac Pro tower? Is that ok for the machine to use this button regularly. Is it better to leave the computer on/asleep than to turn it on and off every day using this button. I always thought that button was in case there's a crash and you can't turn your computer off or on another way. Thanks, if you konw the answer to this question.

Paula