What are precise benefits that I can get as an investor from investing in exchange traded funds (ETFs)?

While many investors have similar outlooks, no two strategies are exactly alike. Due to the unique structure of ETFs, all types of investors, whether retail or institutional, long-term or short-term, can use it to their advantage without being at a disadvantage to others. They allow long-term investors to diversify their portfolio at one shot at low cost and insulate them from short-term trading activity due to the unique "in-kind" creation / redemption process. They provide liquidity for investors with a shorter-term horizon as they can trade intra-day and can have quotes near NAV during the course of trading day. As initial investment is low, retail investors find it simple and convenient to buy / sell. They facilitate FIIs, Institutions and Mutual Funds to have easy asset allocation, hedging, and equitising cash at a low cost. They enable arbitrageurs to carry out arbitrage between the Cash and the Futures markets at low impact cost.