For once I agree with everyone above, and kudos to your morally appropriate responses.
I'm sorry Jst4sumchat that you're in such a tough relationship situation. But, you have a critical choice to make here - before carelessly pursuing your idea. If you love your wife and believe in the sanctity of marriage, you must remain faithful and supportive during her hard times. In fact, it is your unconditional love that may sustain her through her hard times more than anything else - or more than you'll ever know.
If you seek out new relationships alone with other women, particularly ones offering shared interests, good company, and emotional sympathy and support, you will likely destroy your marriage completely. You can't help the home situation by seeking something new and better elsewhere. You'll give up on the former to focus on the latter.
If you want to abandon your wife and work towards a divorce, then go with your plan. If you want to love and be loved the way a married couple should be, then you need to remain loyal, loving, and supportive towards her. It may be a life long test, but wouldn't you appreciate the same if the tables were turned?
I understand your need to get some relief outside of the house, but you can find buddies for that; not other women.