>>1746400the pads can be costly unless your shopping on aliexpress, basic disk brake pads $10, average disk brake pads $30
Some pad shapes are subject to scarcity or compatibility problems, its more noticeable with Disk brakes anyway
turn over time for a full adjustment brakes disk brakes takes longer than with V brakes
BSO disk brakes are hardly better than BSO V brakes, their only saving grace is that the wheel rim is protected from how shit they are, the whole bike is shit so who cares
anyway I see disk brakes as being suited to more expensive bikes and heavy duty bikes, its too much for a casual rider