What is your reason to come back to your mat every single day?
I started practicing yoga out of an urgent need to move. I was trapped in a Costa Rican tree house due to heavy rain falls. Yoga seemed the only way to move. I would never have thought that I will find stillness through movement - and I would have probably stopped doing yoga. Because I didn't want to find stillness, not want to stop.
We all have different reasons for why we do yoga, for why we day by day come back to our mat and practice. Therefore, we should not judge others for their way of doing yoga. Rather, we should appreciate every person for their reason of why they come to our classes every single day or week. This reason may change over time - or it may stay the same. It doesn't matter.