Lots of emotion around the M7 - some love it, some hate it usually viewing the added automation as heresy. As always, you will ultimately be the judge.
I am very new to Leica and view it as a fine tool, but only a tool, not an icon. I love my professional carpenter hammer, but when I need a screwdriver the hammer won't do the job no matter how hard I may force it. Seems the same to me with the M7 - if you need/want automation it's the only tool that does the job, outside of the M8, which is another tool altogether.
So my decision became which of the current Leica tools best suits my needs? I didn't want a collector Leica, nor did I want an older design, so my choices were basically M6(including the .tll) M7, M8 and the MP.
Given those choices, I thought that FOR MY NEEDS, the M7 was the best tool. It has everything that the M6 and MP have with the added benefit (to me) of intelligent automation. Intelligent because I can use it or chose not to by just turning to the manual controls.
So far, and my experience is very limited, the M7 is the right tool. I have the 0.72 finder and I wear glasses. I see why some people may prefer a different finder because of glasses, but to me it is tolerable. I also favor 28mm over 35mm perspectives and for that the 0.72 is a bit better - in my opinion - because of the wider view that is provided.
The flare issue on early models may be the source of some owner complaints that you've read, but the fix is available if it is a problem for you - I suggest you try before upgrading. I have an early production M7 and I have had the rangefinder upgraded to the MP version, and have added the MP film advance lever. The upgrades were worthwhile, iin my opinion, but others may disagree. I can see why some users without the upgrades would possibly have some minor complaints with the camera, but my experience was that the flare issue was not always visible. It occurred in certain situations and with some wider angle focal lengths more often than with longer and more normal focal length. Since wider angle lenses are often considered standard on Leica cameras the flare issue may be more of an issue for you if you shoot wide angle often. If that is your issue, get the MP finder fix installed and life will be wonderful again.
The M7 is well balanced, shoots and feels just like the other M's, and to me has no significant downside. If you don't like the automation, don't use it. In terms of value, the M7 is selling for about half of the current list price in the used market. Compared to their original prices M6s actually sell for a bit more. I can't think of a single better value in all of photography than a well cared for used M7.
If the M7 seems to be for you, give it a try. If you don't like it, there is a ready and active used marketplace.