2. Bitcoin might be well known but you still cannot buy common goods and services with it
3. Would you wait 2 hours for X confirmations when you want to buy an apple?
4. And for merchants might be easier and cheaper to develop its own coin exactly according to their needs.
1. true
2. https://all4btc.com/, coinmap.org, https://www.bitcoinstore.com/, https://www.bitmit.net/, http://usebitcoins.info/
3. if you do not pay a transaction fee it may take long. Otherwise the transaction will be visible immediately and confirmed within minutes
4. try that - anybody has the right to give out redeem codes for his goods