Science is always evolving and good growers keep up with science and always try to learn new and better way's to grow. If you are still using the same light bulbs that were used 10 years ago you are missing a lot. You will still grow the same amount of weed you grew 10 years ago with about the same quality. If that's works for you then have fun.

Please don't put MH, HPS in the same league with fluorescents lights. Fluorescents wish they could produce the lumens MH & HPS can.

Fluorescents may work as sidelight but MH & HPS are better; fluorescents are just a lesser of evils as lights go.

Serious growers will always spend the money and take the time to try. They are not afraid to experiment and will always strive to produce the very best.

Well I'm out of words on this topic. Either you use them or you don't it's up to you.