The write offs that allowed Corps to pay on average 24% instead of 35%. Some companies could take advantage of them some could not. Now none can and they all get a lower rate. I get that a direct bonus in 2017 is a drop in the bucket that will be saved in 2018, but its a start and more then likely most will be used to expand the business and compete on pricing, which is a savings passed on to us consumers and jobs or better jobs for people as ATT expands is business. ATT will probably bring some business home since tax rates will be cheaper hear then what they are paying outside the US which allows for other logistical advantages, like people working under one roof and less travel expense. I am sorry you dont see the value in it, but I do and so does the market obviously.
Again, taxes are corps are nothing more then a pass through to you and I. One way or another, we pay it. If that tax is very high, then companies look for ways around it, like moving jobs over seas and not bringing money back to the US. More people will have jobs because of this tax plan and people will pay less/get more value for their dollar when they consume products from these evil corps. Even if the corps just use the money to buy back stock, the market will go up and so will your 401k/IRA. Your going to need it because SSI is going to be bankrupt.