Welcome to the wonderful world of "Bad DPE"!
1) You know what they call a guy who has to finish up the check ride with a second ride? "Pilot" You know how many people have to go through this? Unfortunately a lot. You're close to being "Pilot", and getting all the good tables at restaurants, preferred parking, being able to buy the pilots only sunglasses, etc.
2) There is a DPE around these parts who tags a high number of check rides as "Disapproved". He isn't being used much by the CFI's anymore. My CFII won't use him any more - he just fails too many for not good reasons. IF you really are not ready, do something stupid like stall on landing, OK - need more training. But that's not your case.
3) Yes, this should not be a miserable experience. If you only have 1 or 2 things to finish up, try and gut it out and finish with this guy. You'll never see him again. IF he won't/cant' get you scheduled to finish up any time soon, then just do your "additional CFI hours" as required and find a new DPE.
Don't let this DPE get in your head - I know, easier said than done.