|Sports bottles, straws, and cups with lids are totally different IMO than the stoppered duck billed sippy cups that are on the market today.
I have no problem with older kids with water bottles and straws. The "baby cups" are (to me) unhealthy and unnecessary.
Most of these cups are not being cleaned well. There are a few parents who do clean the lids and the stoppers, but most of those parents that I know, don't clean them. Many parents will let a three year old walk around with these cups filled ALL day with sugary drinks. Juice is very sugary.
REALLLLLY look at those little rubber stoppers. Do you see black stuff?? Those things are so hard to clean.
The only sippy cup I will allow in my daycare are the nubby cups from Wal Mart. They are cheap enough to throw away, and they don't have the stopper. We mostly use the Take and toss cups with straws, but at age two, they don't get the straws anymore either
Honest to God, what is the difference between a sippy cup and a cup with a lid/straw or sport bottle? They are both designed to hold a beverage in a spill proof manner. I really and truly do not see any difference here. Sure, one may be found primarily in the "baby section", but they serve the EXACT same purpose.
About the cleanliness, I said before that I have sippy cups that are well over 3 years old. I just went and looked at every cup in my pantry and none of them have black mold around the valve and when I smelled them, there was no odor whatsoever. I am 100% confident that my cups are as clean as any other dish or cup I may use.
Again, for the OP. What exactly about seeing a child with a sippy cup makes you uncomfortable and why do you think that is? I am very interested in your answer.