Probably a DUMB question....why do I need framework at all ? Just what does
it do ? (briefly)
..Net is a family of programming languages. The .net framework is a
corresponding run-time file for programs written using .net. You can't
run a .net program unless you have the corresponding .net framework
file available for it to use.
If you run such programs, you need the .net framework for them. If you
don't run them, you don't need them.
I have had ver 1 to 3.5. I have uninstalled all of them.
If you got away with doing that, then you don't run any programs that
need them. At some point in the future, you may find that you will
want to run such a program, and will have to reinstall one or more of
these.
Machine seems to run better without .net framework.
Nope, not possible. You might not have needed them, but there's no
downside to having them, and the computer can't run better without
them. What you did is like removing the ashtray from your car because
you don't smoke. That's' fine--you may not need the ashtray, but
removing it won't make the car run any better.
Windows Update wants to install an update, so apparently, something still
exists out there.
I suppose at some point, I will need to reinstall .net framework.
Since there are a lot of programs that need them, you will likely have
to reinstall one or more of them in the future.