Like most alts, litecoin doesn't have the support. Btc may not be the best coin but I it was here first and holds the most support. It's the most secure network because it's the most widely adopted. It's the most widely adopted because its the most secure network.
BTC, LTC & DOGE all have the exact same security, considering that Chinese Mining Pools Secure all 3 PoW coins with their ASICS.
Only real difference is the other 2 are faster & cheaper and have less price manipulation.
