is it ever to late to get out of a one way marriage?

my wife and i been together for 21 years and we do. not have many problems to copaire up would be like saing she is a plin pice of paper i have screbbles ans rips holes and coloring of all kinds almost a mess. in other words i am a outgoing extrovert she is whithdrawn ansd unemotional. i have allways had the feeling of being alone and we can go alll day without speaking to eachother maybe the ramdon message about one of the kid's school work or the dog something like that nothing about us. so i was trying to understand even if she had some issues or problems with me why would she not speak up and say "hey i not happy anymore we need to talk or get help" i have asked her to go with me to counseling but only if she made an effort to make it happen to get direction to there office or call to confirm the apt, but it never works like that. so if i start thinking it time to get out and find love real love of a woman who knows how to communicate and express herself and her needs and desires is 52years old too old? should i just live with things the way i have for so long? i ask because i have started to have doughts about why? i know this is a very short version of everything but i welcome any advice anyone has, thanks