How many people here installed and use an under-sink water filtration system or full-home system? I've been using them for about 12 years, re-filling liter-siz

How many people here installed and use an under-sink water filtration system or full-home system? I've been using them for about 12 years, re-filling liter-sized nalgene bottles as needed. For a long time, I've wondered whether a filtration system in every home would change people's water consumption habits: would people still buy bottled water despite having superior-quality water available from a tap? As the expression goes-- You can lead a horse to water but you can't teach it to drink.