How often are guys unable to reach a climax?

This should be good…

This looks like your first and only post so far.  Are you new to TER?  Welcome aboard.  
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First, is this just a survey question or is it an intro to questions about dealing with the issue?  
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Second, scroll down to another active topic called "Do ladies care if I don't finish?"  
http://www.theeroticreview.com/discussion-boards/ter-general-board-12/do-ladies-care-if-i-dont-finish--1008193  There are some other recent topics that are relevant, also. Scroll the first few pages and read the topic titles to see what fits.
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Third, check for recent discussions on the Over 60 board. Of course, the problem is not exclusively one of senescence but it is more common Over 60 and it is discussed there.
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Fourth, use the "Search" function on General and Over 60 to look for additional relevant discussions.  
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Fifth, if you are a Newbie, check out and use the Newbie board for Qs such as "How do I search for info on the boards?" or "Which board is the best to ask Qs about ED or failure to climax?" And so on.

...I have found that it takes me longer to finish and sometimes it's an uphill battle (I wish I had this "problem" in my 20s and 30s lol).

Unfortunately, the past 5 sessions I have not finished.  I did not and do not consider it a bad session because of that.  Most of the time I am truly looking for both companionship and getting physical.  Most of the time I end up apologizing because I don’t want them to think it is because of anything they did and it is just me.  

a longer session, say 90 minutes or two hours.  I know a lot of older guys that would feel anxious watching the clock and knowing the time was going to be up before they finished, and it does leave one with a sense of frustration and anger, so you are not unique.  For many of them, extending the time takes away the pressure to meet the one-hour time deadline, so they can relax and enjoy the ride until they reach the destination.  Since you are not running "overtime", but rather have paid for the extra time, most providers will happily keep going and pull you over the finish line.  (no pun intended.)

For many years, I saw a lady in LV that for a time was known as one of the top ladies in LV.  If it said her name, some of you would recognize her.  But she retired a few years ago.  So, I will not mention it.  Anyway, what she told me (and I have heard this from several ladies) is that you don't have to climax to have a good time.  The important thing is to have a good time and a lady will do everything within reason to make sure that happens.  If u don't climax don't sweat it.  Its not the end of the world.   I suppose when u are in your 20's you probably fill a bit asharmed.  But the older gents (like me) will know what I mean.

I mostly book 2 hour appointments.  😢😢😢