The reality is, in very congested airspace, being vectored, and often at high speed (180kts or greater) then occasionally your beautiful constant descent approach leads you to being slightly high on the glide. It has happened to me at AMS too - and not alot you can really do about it, since it is always difficult knowing exactly where you will be turned on base & intercept, and how fast/slow the controllers want you to be - and it varys at different times of the day, depending on traffic. To throw away an approach because you are 150ft to high at 6 miles would be a nonsense. If you are not stabilized by your specified, company height (1000 or 500 ft) then yes you should throw it away.