I can't believe some people. 99% of the series was awesome but you can never go back to it? Really? Have gamers become such drama queens?
It's like those people I talk to about the Lord of the Rings movies. All the talk about is how gay Frodo and Sam looked at each other at the end. Ummmm, there was about 12 hours of movie before that people!?
Not the same.
The Mass Effect series is a constant build up of decisions and experiences toward the eventual end outcome. There is investment for a promised payoff that doesn't get realized. It isn't petty.
If you take away the payoff for investment, why invest? That's why people won't go back.