The bill will effect everyone. It will raise the overall cost of healthcare in the US. To think you can cover millions more as well as extend coverage of millions of others while reducing costs is simply naive. This money will come mostly from the young and healthy who will be forced to buy more coverage than they need. So it's a further burden on the younger generations to subsidize the older workers and retired. See also Social Security, Medicare etc.
Putting aside the sheer inefficiency, fraud and waste inherent in any program this size, sure it would be good to have more people covered. That doesnt mean this is the way to do it.