Sometimes I agree with people just because I don't want to argue with them and sometimes it is because I genuinely try to see both sides of an argument. I would say the second half of your sentence is not that you are necessarily agreeing with them, but rather you are specifically not disagreeing, i.e. you are reserving judgement until you have weighed up the options (e.g. their point of view)
Sometimes one reads something which appears indisputable, but in fact, on closer inspection, can be discussed and disputed. One might imagine that Cyclists who wear helmets are less likely to have an accident is likely to be a valid point. However, I have read that the opposite can be true - as the wearing of helmets can give some people a sense of security that makes them take more risks and, conversely, some motorists are more cautious when driving by cyclists without helmets.
I've got another 'keen'... Ouch!
