With Single tree build for MFing i would say you could forget about Static field, since basically you will kill faster without using Static Field before, since your damage output is simply immense!
With Dual-tree or Archmage builds i would never play without Static Field. With about +12 skills your range is good enough. Also you will usually play with a Merc who can tank for you, so its safe to use Static Field in closer distance.
There is simply NO spell that can drain a huge group of monsters to HALF their amount of life than Static Field. Would never play without it.
Be that you use max-block or vita build where you teleport fast its really all about using the right tactic to escape attacks. There are alot of means to reach that goal.
What exactly would you do with that 1pt. I hope you are not going to tell me that by saving that point you will alter the damage output you already have to do more damage than by using a 1pt Static Field, that usually is a 12-15 pt s Static Field. That 1 pt might boost your damage a little bit, but that it!
Would i play without Teleport? If so i could just go and play Paladin or any other char not using Teleport. Same goes for me with Static Field, ot even Telekinesis. There is no better way than disabling bosses, that are immune to your skills, by knocking them back with Telekinesis and stunning them, so your Merc can tear them apart.
Just because you are not very good at using a skill, doesn't mean it will work properly when you know how!