We live day by day so comfortably, doing our own things not knowing that we are polluting the air and killing the Earth. You realise in the early years man did not worry about this problem until only recently when they found out that global warming is becoming worst and if it's not made aware to the people the earth is going to die.

I read this scripture in Mark 8:34-38 and it kind of portray the same thought

We live day by day so comfortably with our lives doing our own things. Working so hard and getting everything that we want. Not knowing that we are losing our soul as the days go by. That you begin to see that we will not worry about this problem until when the time is almost up, when we are on our deathbed. For global warming it may seem irredeemable but still people are trying their best to reduce it. For our souls, you realise it's never too late to save it, but why wait till old age to realise this. Why not start now?