I see people using bottled water all the time. It is definitely your choice on whatever you do about your lifestyle. But if you care about avoiding plastic, this is where you need to change yourself. It may feel like the pack of bottled water you buy at your local store is cheap, however, it can be 1000 times more expensive compared to tap water. Tap water can be as little as one penny per gallon. Now, you do the math. Don't forget to add the amount of water needed to make and break that plastic water bottle.
Therefore, our upcoming generation will appreciate your lifestyle if you chose to reduce the consumption of bottled water from today. I know there are situations where it is unavoidable but I am asking you to try to avoid it where you can. I am sure you will feel better about it.