Online photography forums can be hazardous places. Although you can find great advice and support there, you’ll also witness plenty of disagreements. Indeed, those threads are usually the fattest, as different posters rip into each other over such merits as “is photography art?”.
I’m not that a good forumite, indeed, I’m a bit off them much of the time. However, I think that I’ve observed a common root to many of the disagreements. It’s simple. There are many types of photography and photographer. None are better or worse, however, their equipment, aspirations, and techniques are very dissimilar. A nature photographer will be able to benefit from the longest and fastest of lenses for their bird shots, or incredibly expensive macro set ups for their micro-life. A sports photographer will benefit from not only fast lenses, but from the latest cutting edge digital sensor with it’s low light performance – as would the concert or gig photographer. The street photographer needs a small, un-threatening camera. They might even be happy to use film for a medium. The professional wedding photographer – well, they’ll need quite different gear.
The problem is that what is best for one type of photographer is not best for the next. That’s where the arguments start, when they fail to appreciate that simple reality.
For myself. I have little value of sharpness. I don’t need the latest cutting edge gear. I don’t need technical perfection. My photographs are not (at least in my eyes) less valuable for lacking sharpness and detail in perfect exposure. What suits my aspirations may not suit yours.