I hate it when people propose "just" getting another piece of hardware, be it for wireless connectivity, routing, internet/ad filtering, data and web hosting et

I hate it when people propose "just" getting another piece of hardware, be it for wireless connectivity, routing, internet/ad filtering, data and web hosting etc. etc. WHY must people again and again insist on this? This is not the way for 99.999% of people Why not insist on extending the abilities and security of the one device 99.999% of people already have, before insisting on the acquisition of another, special-purpose device, requiring its own intricate setup and maintenance and power and space and connectivity? I just don't get it.