No one is slamming the efforts of doing the work yourself, they're slamming you for being cheap because of your comment earlier on came off as such. Just because a socket costs a certain price, should I expect a shop not to charge me more than the cost of one? You pay for the labor time + experience and if you want things done correctly time adds up.
No one is discouraging DIY in this thread, they're merely defending the reason behind the cost. If you don't want to pay the cost, then feel free to DIY but the results may not come as you expect them to be.
More or less your comment earlier just came out in a way that was going to create the responses received. Obviously experience comes in due time and practice, but do you want to start practicing on your car is the true question. If you're looking to explore your options, I'm sure PMing Seascoob will still get to him, he probably just won't be active in posting in public anymore.