I am happy the sensor is there, because I know its a selling argument for the device. the Android crowd will love it, others like it too.

I just like to exercise my option to ignore it and use more secure locks.

On my N900 for example, which I use for adminstering company servers I haven't got the possibility. So I had to build an second security layer myself, in this case ssh key passwords. Having these and my contacts and images behind a single strong lock would be awesome.