Is it better to download games or buy physical games for the PS3?

I am a single player campaign person and once I am done playing a game, I do not play it again and if I own a digital copy of the game, I am stuck with it. Resell is the biggest drawback for downloadable games. Since games cost a bomb, I would like to be able to buy, play, sell and repeat for most games. This allows me to play many games at a fraction of the cost. With this philosophy in mind, I am also working on a platform called https://play.google.com/store/apps/details?id=com.manye.hanchu&hl=en (beta version). Hanchu is a peer-to-peer platform for buy/sell used console games. It allows sellers to set price of their game, and if somebody purchases the game, platform provides door-to-door logistics services including packaging. We want to build a community of gamers where they can resell their games at a click-of-a-button to other gamers at a fair price (market price of used console games) and in return, the platform enables door-to-door service like payment, refunds, pick up & drop off facilities. Users can buy a game, play it and resell it on the platform to recover a fair bit of money spent on their games. The app is available in all Tier-1 cities in India. Disclaimer: Co-founder of https://play.google.com/store/apps/details?id=com.manye.hanchu&hl=en, a peer-to-peer platform to buy/sell used console games.