Don't know how much help it is but can share with you my experience. I'm 64 and yesterday had my last of 12 of the double shots of Evenity and so I don't know yet how much of a difference it will have made. I had similar worries (and now concerns about what will be next.) But what I do know is:

I had no side effects. I had them scheduled within a 29 to 32 day window and luckily that didn't clash with anything. I was in and out in 15 minutes and the nurses told me that people do really well with it. I learned a few things: who does it makes a difference. One nurse there on certain days would somehow manage the syringe or angle or whatever it was in my arm or belly (I could choose) and would leave a small mark for a day or two, no discomfort though. The other nothing... no bleeding, just this cold feeling when the stuff goes in... and walked out to the car feeling fine!

So at least if you do decide to go with it I'd think that along with the incidents of serious issues being so small... and how much is just the pharmaceutical covering itself against battles over heart issues that might have happened anyway... there are lots of people like me that had no issues. A site like this naturally would have lots of people that had issues writing but there are many like me who got on the site to get feedback on timing questions and such. (And it's great to have a community like this.)

Hope it's reassuring.