No it shouldn't ruin it entirely. For me, it messed me up for 1-2 hrs where I wanted to sort of sulk and then I decided, hey, I knew they could lose and now it is time to do some other thing. Which is only a bit worse than some of their bad regular season losses. You can't enjoy the wins but be 100% stoic about the losses. But, in the end... it sucks and then we move on. Next up: speculation on coaching changes and draft discussions.