It depends on what I'm doing as to whether I use my tables at all.
What you need to realize is that if you use a computer and you dive to the NDL or very close to it your tables are USELESS. If your computer fails you done diving. The entire reason for using a computer is to get a benefit out of it, one benefit is longer bottom times. To get them you should understand how a computer is doing that, it's not measuring anything for you specifically, but it is calculating on the fly your dive profile. You could do the same thing if you chose to.
The reason the computer will allow you longer times underwater because it's looking at your dive profile and making calculations based your depth right now instead of something 20 feet deeper. So just because you hit 100 feet for 2 minutes and then come back to 30 feet for 35 minutes doesn't mean your nitrogen levels are maxed and the computer figured that out by doing the math. Using tables you plan on the deepest and the entire dive is assumed to be there, unless you use a wheel.
So you can see that by using the computer on the dive described above allows you to dive it, yet if you go strictly by tables it's not a dive you can do. It's worse if you dive Nitrox and have the O2 clock as well as NDL to keep track of with tables. Now you can plan the dive with a wheel and do essentially the same thing if you want, but the freedom of depth is limited by your plan, i.e. dive the plan. The computer allows you the freedom of plan flexibility, if instead of the agreed upon 100 feet for 5 and 50 for 20 I decide that there was more to see at 35 I can do it and stay longer. Using a table I'd have to cut the dive shorter.
I might use tables to initially plan a dive, and during the dive we try to stay close to the plan, but our plans always reference the computer as well. In other words, if we plan a dive to 100 feet and somebodies computer says go up before our plan said we should then we go up. How far depends on what we've seen on the way down and what we discussed in the planning.
Computers can allow you to get careless and you'll stop planning dives, but I'd suggest you keep the noggin in the loop and planning phase for practice. Just remember if you exploit the computer's benefits then you may as well leave the tables home because they're now useless to you. If you dive per the tables then you may as well leave the computer home because it's useless to you. See the contradiction?
The middle ground is where I'm at. I like a bit of flexibility within limits and I like the dive profile the computer keeps track of. It's interesting to match it's peaks with the rocks you go over...