Do you recommend changing your transmission fluid I have 211,xxx and i heard from some mechanics that i shouldnt change it but some people said it will be ok. So please tell me should i change it have anyone experienced any problems after changing your fluid please let me know

 

absolutely change the fluid!

Most would say you should not do a fluid flush as that loosens stuck particles that could possibly cause more headaches down the road.

Changing the fluid by simply doing a drain and fill would keep the fluid fresh without loosening stuck particles.

 

if transmission is shifting fine then why not if the transmission is slipping then i would not recomend it

 

There are a lot of opinions on this; search and you can find the discussions as well as lots of threads on different techniques and approaches to changing as well as how to DIY it. (gradual drainfill, partial exchange with disconnected lines, full exchange, dropped pan and cleanout, etc etc).

Probably the easiest is doing a drain-fill. It is arguably easier than changing the oil; so if you DIY it is cheap maintenance with the least chance to mess something up. If you're paying a shop to do this, then you may need to take that into account in your decision-making.

I personally wouldn't follow LexiBlue's advice because by the time a problem is detectable and something you feel you have already caused damage to your car and it may never get back to the way it was.
It is just like healthcare, some cheap preventative maintenance prevents a more expensive problem.
I suppose it also depends how long you intend to use the car and if you want to invest in it.

I had a 1990 Ls400 and did decide to stop maintenance on it when it was getting near the time when I didn't care if it ran anymore or not and time for a new car. (traded in during cash-for-clunkers)