I read about ART on some blogs and decided to try it myself. I have a Motorola Moto G and enabled ART on my phone. After that every game which I had already installed (Asphalt 8 and EA's Real Racing) or installed after enabling ART crashes just after starting.
Also, from the blogs, there were two things that caught my attention about ART, which were improved battery life and low RAM consumption. I can't say any thing about the battery life but RAM consumption was almost same and in fact phone was lagging.
Does that mean ART is not suitable for my device as it is optimized for the Dalvik VM?