Should I wait to upgrade to Maverick's??? Phones??? iPads???

It seems everytime I see an update is released for any Apple product there is a flurry of issues...

Because of this, my ipad 2 is still on IOS5...My Iphone 5 is still on IOS6...

All I read is about how things are lost, stop working etc...

I realize that if someone upgrades and has no issues, they don't post their success online...

I've read people have lost photos in iPhoto, Safari doesn't work, VPN stops working, etc.

Should I upgrade my brand new 27" imac? If I have issues, who will fix it? How about my other apple stuff listed below?

Starting to loose all faith in ALL apple products.

What we as a family own:

2007 imac 10.6.?

2013 imac 27" 10.8.5

ipad 2 32gb IOS5

ipad mini IOS7 - daughter updated

iphone 5 IOS 6

iphone 4 - 2 of these, not updated

appletv