I enjoy doing drop sets. I will do a couple warm up sets then go heavy. When I get my last heavy set in, I will do drop sets. It works for me now. When I was younger the only time I would lift lighter was when I was cutting up.
If I was power lifting I wouldn't be picking up light weight other than to warm up. I like the defination I get and still get some heavy sets in to maintain some size. I don't do cutting or bulking cycles any longer. Its not ideal for either, but works well for me at this point in life.