I find mirrorless cameras, with their focus peaking and magnified focusing, to be ideal for taking macros. A macro lens that i bought 5 years ago for my DSLR was collecting dust on a shelf until i found out what fun it is to use it on a mirrorless camera. Yes, i still have a DSLR and use it for event applications where it has its advantages.
At first, I loathed evf's. When I started with video and the xl1 I thought they looked funny, as I had a lifetime of ovf. Then well, maybe it's shooting so much video and using the RED's but I started to like them, then with the Olympus omd and the Panasonic gh3's, went from like to love.
WYSIWYG is an amazing system with continuous light. I know, I've heard, there not there yet and there are some liabilities, but the same can be said for ovfs which has different liabilities.
EVF's are the future. They allow articulating views, steadier shots and with old legacy lenses like Leica R's or Ms, or those f 095 chinese lense, or metabones, allows for focus that you can't get close to on any modern dslr.
I'd probably feel different if modern dslrs had a viewfinder you could actually manually focus with and removable prisms but they don't.
One other thing I love is shooting a frame, keeping my eye on the viewfinder and seeing everything frozen. It's the most instant polaroid ever and none of this stopping, clicking a button and looking down at the lcd. It's just shoot, correct, then shoot.
EVF's have also allowed all the different retro camera styles. Without a evf a rangefinder would be more difficult, even the omd which mimicks the om1 series, would have been a much more difficult camera to make in a modern world with an ovf.