My first thought for your question was...you having another woman would bring on anger from her, and anger is so much easier to deal with than being hurt. It also would ease guilt she might have...
That is JMHO. If you don't want to find someone else, then don't.
Me:35, 2 kids from PR H: 37, 2 kids with me T: 15 years M: 8 years in Feb. Second walk out: 14-01-2011 H had PA: 2007