When can we use "as far as I'm concerned"?

[mokbon]

Hello:D

I want to know some special condition for using this.

When someone's opinion differ from me, and when someone's opinion is the same from me, can I use it?


EX) 1. Disagree
A: Soccer is a good game.
B: No, as far as I'm concerned, soccer is a very demanding sports that make tire us after doing it.

2. Agree
A: Soccer is a good game.
B: Yes, as far as I'm concerned, soccer is really fun to kick a ball to the goal.

[JMurray]

mokbon.
Both these examples are OK, although they need a little correcting.
The comma after "concerned" is often left out and I'm not sure which is considered the more correct form.

1. Disagree
A: Soccer is a good game.
B: No, as far as I'm concerned, soccer is a very demanding sport that makes us tired after doing it.

2. Agree
A: Soccer is a good game.
B: Yes, as far as I'm concerned, it's really fun to kick a ball into the goal.
or
B: Yes, as far as I'm concerned, soccer is really fun because I like to kick a ball into the goal.

not a teacher

[Rover_KE]

You can use it in place of in my opinion.

Rover