Minecraft:TOO ALONE IN...

TOO ALONE IN MINECRAFT SINGLEPLAYER too much animals too much zombies............and this can stop you very easy your passion for getting diamonds or other ores in singleplayer and here s WHHYYYY:
1.You haven t got friends
2. Ravines Caves Mineshafters etc..............you aren t scared to stay in them without a FRIEND.?
3.it s hard to build big houses without you and YOUR FRIEND to stay in it.
And.........nothing else.......i only think the multiplayer is the best.......but......i know players can grief you kill u steal you etc. BUT you have FRIENds what help you. This Is The Most Important Thing.!!!!!!!!!!!!!! And if You think this isn t the truth TELL ME!!!!!!!!!