Thinking of trying out glass bottles. Does anyone here use them? Any drawbacks?

The drawbacks about glass bottles are that they are heavy (may be a hassle to bring out) and they are breakable (may be a hazard for parent and baby). From my experience, we have to be very careful when washing glass bottles not to drop or knock it on any hard surface. Also when we go out we only bring the plastic bottles as our bags can really get quite heavy. Other than that I love it that it is hygienic and we don't have to change the bottles regularly. http://www.missyqiqi.com/2014/11/different-types-milk-bottles/