Positive points 1. Cost of living is less compared to Bangalore, Mumbai, Hyd etc 2. Lot of IT Companies 3. Comparitively safer place to live. 4. Good hospitality from chennai locals 5. Lot of good hospitals. 6. Though crowded, frequent public transport.
Negative points 1. Rude auto drivers 2. Conservative people (difficult for bachelors to get an house for rent) 3. Indiciplined traffic (applies all over India) 4. Coovam river is actually large drainage. 5. Hot weather 6. Mosquito problem in most of the places almost most of the year.