The main purpose of mitosis is to ensure the accurate distribution of chromosomes to the daughter cells during cellular division. It serves crucial roles in growth, tissue repair, and asexual reproduction. Mitosis allows a single parent cell to produce two genetically identical daughter cells, maintaining the chromosome number and genetic integrity. This process is vital for replacing damaged cells, promoting organismal development, and facilitating regeneration in multicellular organisms while also ensuring genetic consistency necessary for proper cellular function.