If they don't have home because of poverty, it doesn't mean railway station should be their home.
1. There are government schemes of slum rehabilitation. People take a house under it and let it out on rent and continue to live in slums.
2. Beggars staying on stations spit, litter, make it dirty and they also answer to nature's call on the platform's making it unhygienic and prone to more disease.
3....
more... Crime increase.
Considering these factors I am against BPL people taking shelter on stations.