from my personal experience after a few hours of usage my phone becomes very sluggish. I open up my task killer and it says I have around 30mb of memory free, I kill all apps and its suddenly fast again with around 140mb free.
So telling me the need for a task killer is nonsense is, well, nonsense to be honest.
Just curious as to what apps your running that drain your memory that drastically? I'm constantly popping in and out of various media apps, downloading on the net, surfing, using multiplewidgets, emulators etc and always struggle to have more than 50MB memory used. Phone always flows swiftly.
I would say to the op, leave it installed, it wont hurt anything and maybe try a day using it then a day without it and see if you notice a difference. I personally get better battery life out of it as do several of my friends who also use it. It doesnt kill system tasks by default and I also have the important apps set on ignore.
I get a day and a half battery usage and it only ever drains quickly when I download anything 100MB plus using the mobile data connection. (Which I also leave on with appsupdating hourly to bi-hourly.
And saying that killing push mail and syncing apps will actually decrease your battery life.. wtf??? push destroys your battery life and its a known fact that data activity is one of the biggest battery drains
Your right push mail and syncing apps does drain the battery but so long as you setup your schedules for both with reasonable time frames not every second what has that got to do with killing the apps themselves. The apps can and will quite happily sit there dormant so long as you schedule correctly. The above point in reference to killing apps is eroneous.