I find that 50mm is neither here nor there for me. A cheap and good lens, however, it seems to be best for more predictable situations, ie, taking pictures of a friend, or from a fixed spot, like concerts.
Little India, it depends on what you're taking. You mentioned people, how far do you plan to be from them? for 50mm, 10 meters is too far, 3 meters is a better range, but you get attention of that person, some may not like it and you may not feel good about it. If you're going to be outdoors, I recommend a zoom lens, something like a 55-200? I'm not sure what have you on Sony. Indoors, get either a 85mm or some F2.8 wide angles? (may be expensive!)