Don't know how bad they are, but I will always hate the 49ers.
My wife and I got married in 1993 and moved to SF for my job. Everyone loved us as Chiefs fans because Joe was our QB. We had our apartment balcony and window decorated with Chiefs stuff and were constantly getting compliments.
Until Joe had the comeback win against the 49ers. Then the apartment complex made us take everything down because they said they received too many complaints from the other tenants.
While I hate the leave in the middle of the night ravens, I will never root for the ****ing 49ers. This will be the first SB since the early 70's that I might not watch. Just because I hate both teams playing.
I can always watch the commercials online the week after.