With due respect I speak what I think is right and how others perceive my credibility is secondary to me. I already gave proof of what Antony has done. Feel free to do a google search. If Kerala had the only coastline in India then I would agree with you but sadly its not. Its not even 10% of India's coastline.
So take a closer look. Gujurat anything near Bangladesh/Burma is a secuirty risk due to proximity. Goa is a tourist destination. Other areas are affected by Naxals. Kerala offers Naval related facilities and has a big accessible port.