Things I wish I knew...wish I had known I could skip to page 9 of this thread and avoid all the grasshopper talk...I've lost track now and I can't remember if grasshoppers are 1 dimensional or 2.....my business is doomed!!!!
SO....back on topic...I, like others, wish I had kept gear longer and learned how to use, instead of buying new cameras as they came out...and buying lenses that I thought were just a little bit better than the ones I had...
Buy the best gear you can afford and stick with it! I am convinced that the high end lenses are better and produce better images, both 3D and 2D images! BUT...a Sigma 30mm lens will produce outstanding images for a fraction of the cost of a 35 L...and a Sigma 70-200 lens will produce outstanding images, just like the Canon or Nikon equivalent.
As for all of this talk about businesses failing and the photography industry being doomed...very few businesses in ANY industry actually make it. Look how many photographers, on this forum alone, make any amount of money at photography, a very small percentage of them actually support a family at this job, just like ANY other business.. restaurants...IT consultants...coffee/gift/hobby shops...photographers....MOST will fail....and it's not because of Craigslist or Walmart...well, mostly because of Walmart....but I digress...
Quality makes the world go round....well, that and money!