This tree has basically turned into a linked list. This is definitely a problem, for with a tree unbalanced like this, all of the advantages of the binary search tree disappear: searching the tree is slow and cumbersome, and there is much wasted memory because of the empty left child pointers.
Trees are an important part of our daily lives. They also absorb carbon dioxide (a greenhouse gas) and give us oxygen to breathe. Trees make our environment beautiful with their different colours, flowers and shapes and they provide us with shade and relief from the sun's heat and harmful rays.