How Do I Handle Resentment For My Wife For The Next 16 Years?

married 6 years. been horrible the past year and a half. she's constantly a bitch to me for reason. I'm a father of two young sons. Two parent households are the greatest markers for success in a young mans life. I do not want to take that away from my sons, even if it requires me being in a miserable marriage. I would really like to keep emotionally distant from her, but I know that would only make things worse in the long term. should I fake emotional connection? smile and laugh for the next 16 years? I'm not afraid of being alone, I love it, but I won't love making my sons life harder and more confusing than it needs to be. I would die for these boys so surely I can live for them. has anyone else here gone through this or something similar? what did (or didn't) work for you? Would love advice. More detailed the better. I'm not here to rant.