Leading a simple life is one's own choice. There are several leaders who did I not go after pomp and pleasure. Our Father of Nation itself is an example. There were Lal Bahadur Sastry, Acharya Kripalani, Vinoba Bhave and several others who led a very simple life. The first Chief Minister of Kerala, E. M. S. Nambudiripad originally belonged to one of the richerichest families, possessing acres of paddy land. When he entered politics he sold all his properties and have the returns to his party. Later he became the first Chief Minister of Kerala ( one more term he was elected as CM). At the time of death he was living in a rented house. He did not earn anything, lived with the allowance given by his Party.
Personally, I prefer a simple life. Always I used to have a small number of pairs of dresses. I use only use slack shirts without inserting. I use only chappals, no shoes. I cut my hair myself using a small trimmer, inside the trimmer I place the used blade. This I started when I was twenty-five plus. Even now at the age of 74 the same gadget is being used.
In general I prefer a very simple life, though I served as a teacher/Professor for more than 35 years. Perhaps, I got this partly from my father. Of course, my connection with Kerala Sasthra Sahithya Parishath, an organisation working for popularisation of Science also helped me to lead a simple life.