Who doesn't play games for fun the problem with destiny is that it completely relies on replay value. And while the replay value is really high compared to other games, it still doesn't solve the impossible to solve problem of people getting bored with redoing the same thing over and over again. So they used a loophole by adding in gear to grind for, and making people strive for said gear. But with the knowledge that that gear will become obsolete with the release of a new expansion, it greatly decreases the amount of time people wanna invest on grinding out the game. Which is the opposite of what bungie wants it would be much more beneficial for bungie to allow year 1 gear to carry over, but make it cost a lot of time and effort to upgrade old gear and balance the few overpowered gear out so it doesn't seem like year 2 gear is pointless compared to the few godlike weapons we have in year 1