I learned a long time ago to throw the age number out the window.
I've dated men both older AND younger by 10+ years. Each gentleman was considered not by a number, but by their interests, compatability, positive outlook, sense of humor, activity level, etc. What mattered is how much we had in common, how much we connected if we spoke, if there was a physical spark - all the normal signs we look for when we're evaluating date potential in anyone that crosses our path.
Be honest about yourself and what you truly are bringing to the table in terms of your own 'datability', and look for someone similar. Basically know what you are looking for, know what you personally offer, and keep it all realistic.
Before you limit yourself too much, at least read the darn profiles! There are some VERY OLD ACTING younger men in this world that have bored me quickly, and there are some VERY YOUNG ACTING older gents that were fun, active, and easily kept my interest. It's how we feel when we're together that counts - not our numbers.
Now, that said - I've personally found over the years that I seem to connect better with men close to my age and older. Life isn't all peaches and cream, sometimes it's REALLY difficult. Experience counts with me - and the gents I've met who have gone through a tough time or two and come out a survivor, seem to understand that when times are tough in a marriage - we should pull together and get through them as a team. Again, that's just been my personal experience. To each his (or her) own.
Just my 2 cents.