But I'm more likely to have the A7 with me because compared to my old Canon's it's tiny and middle aged women don't point at me and say "Look at that P**** with a camera!"
I'd agree that the images are no better (pixel peeping aside and unless you're using an older Canon and try to boost the shadows, then you're likely to hit trouble) but my keeper rate is much better despite my expectations and standards rising because I'm much more likely to get the picture that I want first time, that was even true of my Panny G1 when I compared it to my 5D and it's even truer with the A7. And then of course there are the things that take a page of waffle to try and define that I'll sum up as best I can by saying that for me mirroless photography is much more involving, engaging, enjoyable and rewarding than the more conventional DSLR experience.
If it's not for you then it's not for you but maybe you might change your mind in time especially if the market goes that way and you have mirrorless more or less thrust upon you. Having lived in the SLR/DSLR world for decades I'd now hate to go back even if a DSLR could match the bulk and weight of an SLR and even if middle aged women stopped being so judgemental.