All great advice.
Centaurus's tip about having an ILS tuned (if available) is a good one. There is nothing wrong with using the aids that you have as a backup or guide. Personally I find it usefull for when turning base and seeing vertical profile on the glideslope as you will be starting your decent but may not have runway in sight yet, especially if it's the SIM. Having MAP mode to see when you are abeam the downwind threshold to start timing is also useful. At night, reality is, with all the lights around, you just can't see it sometimes.