I quite like the idea of polyamory. Due to low self esteem I always found seduction a rather stressful experience in the past, and it's only over the past years that I've really developed the self-confidence to imagine I could enjoy it, but since I'm married, I can only (ethically) experiment as part of a polyamorous open relationship. My wife wants to broaden things as well, so in principle it could happen; however, she's concerned that she might become jealous if I actually did meet another woman. So the general plan is that she'll find another man first, as I think that experience will reinforce her self confidence and help to reduce jealousy issues; then I might have my turn.
But... how does one actually go about this? Say I meet some woman and we're getting along well. At what point do I mention that I'm married, if it's not immediately obvious from the wedding ring and the general trappings of marriage and children lurking about my life? And then at what point do I let it be known that it could be an open marriage, and how do I word it so as not to make it sound like "I am expecting to make it be open WITH YOU because I've decided we're going to HAVE SEX and now it's going to be awkward and difficult for you to escape if you don't want that!"?
Clearly, experiments must be done.