What is the advantages and disadvantages of using microscope in microbiology?

WELL, FIRST OF ALL, I'D LIKE TO SAY THAT A MICROBIOLOGIST WITHOUT A MICROSCOPE IS LIKE A HUMAN WITHOUT HIS VISION. MICROBIOLOGY DEALS WITH THE MICROORGANISMS AND HENCE, MICROSCOPE IS THE MOST PRIMARY NEED OF THE MICRO LAB. IT IS USED TO OBSERVE BACTERIA, FUNGI, VIRUSES, ALGAE, PROTOZOA, PHAGES, DNA, CELLS, SAMPLES OF THE SPECIMEN, TO STUDY THE STRUCTURE, MOTILITY, TYPES OF ORGANISMS AND ARRIVE AT A CERTAIN CONCLUSION FOR DIAGNOSTIC OR ANY OTHER PURPOSE, IT SERVES AS AN ESSENTIAL INSTRUMENT.