This is a very common question and the answer is still the same (pulled from some of the other threads):
Women (usually) seem to come here wondering if they are 'enough'...good enough or pretty enough or skinny enough to be swinging. What they are told (and usually need to see to believe) is that there is someone for everyone here. Just that a woman is interested in swinging makes them very exciting from the start. After 40, almost all women have something that they wish was better, but after 40 most men realize that the biggest sex organs are a woman's brain, personality, and confidence. While we also commend you for working out and encourage you to keep it up (it will keep you around longer until we all have time to play together ), looks become less of a priority with age. Remember, beauty is only skin deep and is fleeting, but sexy comes from much deeper within.
Go to a nudist beach or resort and most of anyone's body issues will be releaved. Swingers (and nudists) are not just the 'beautiful people', but the every day people (there's more everyday people than beautiful people...it's just a numbers game). Ten minutes at a nudist anything and you'll be saying to yourself 'I'm really not that bad'...and you most likely are not. Real women HAVE curves and are more beautiful because of them.
What do swingers look like (I'm paraphrasing)? Look at the average people that surround you every day. Now picture them naked. Swingers, just like everyone else, come in ALL shapes and sizes. At the same time, there are people who love different shapes and sizes. Once you go to a club, a meet and greet, a swingers resort, or cruise you will quickly realize that you aren't that bad (and better than some). Personally, we (both Mr and Ms Gold) happen to really like curves on a woman and aren't interested in those skinny sticks in most ads (afraid that they could be broken ).
Beauty is only skin deep, but sexiness is something that is projected from deep inside and usually has little to do with beauty.
All of the above are our quotes taken from similar threads. If your wife isn't feeling attractive, then you need to start reminding her that she IS. After that, as stated above, take her to a nude beach or swingers club so she can see how others look. Usually, making plans to attend a club will help motivate both of you care more about how you look (at least it does for us and we're not anything that special ). The bigger question here is you need to find out if there is a problem with your wife and how she is viewing herself. This is something that you need to talk with her about and find out what the issue is. Otherwise, plan on going to a club just to look and see how you stack up.