try to masturbate. If you dont stay active in some way it can decrease. and evan then it may still decrease. there is help though. they have pills for it. what you are experiencing is probably a drop in testosterone. Go see a doctor to rule anything out and see if theres any help. ps built up anger in a mate can also be an issue. good luck and try to understand and help her to understand. this is normal and I think most people at some times in there lives go through this
I think the fact that you are arguing about it may be one of the biggest causes. How can you get aroused when your wife is getting upset that you cant? I don't think there could be any more depressing or un-stimulating event! Has she insulted your manhood or made you feel insecure in some other way? I would think that although she is upset about it, she should realize that since you are over 50, it takes a little longer to get it up and ready, and she may need to become more involved - ie, her on top, manual and oral stimulation of the penis, anal sex, intimate bondage, pron videos, etc. Good Luck!
hi fidosi, i have searched and found this site for you.
it is very informative and will let you determine which of the listed causes may apply.
good luck!!!!
http://www.nlm.nih.gov/medlineplus/ency/article/003164.htm