I personally think some people are capable of living a double life perfectly happy. It's like a job you dislike but the money and benefits are fantastic. Some people can keep a job like this for decades in order to provide a good lifestyle for their family. They go and do their 8 hrs. then go home and turn it off and enjoy the other parts of their life.
Is it dishonest? No. You can find a place of just the right amount of mediocrity to be okay with it. Keep your comments and activity benign and low-level. If you're not seeking an extreme lifestyle of debauchery, you should be okay.
After all, how many hubbies suffer through the opera, symphonies, and the ballet with grace and smiles because their wives love it! I'm sure others will disagree with this, but it's just my opinion. But, like changeling said, only you can determine your level of endurance.