There are several reasons why replacing knob and tube wiring is recommended:
Safety: Knob and tube wiring is antiquated and could present serious safety problems because of issues like deteriorating insulation, a lack of grounding, and insufficient capacity for current electrical demands.
Insurance: Knob and tube wiring is viewed as a fire threat by many insurance companies, who may either refuse coverage or increase premiums.
Home value: The resale value of homes with knob and tube wiring may be lower because prospective buyers are frequently concerned about the risks and the expenses of replacement.
Electrical demand: The electrical needs of modern electronics and appliances were not intended to be handled by knob and tube wiring, which can result in overloaded circuits and increased fire risks.