I joined minecraft in 1.2.5 and knew nothing about the game at that time. I'd ask things in multiplayer like 'how do I craft an axe?' 'how do I create a faction?'. And got a ton of people calling me a noob. It was hurtful, but it was true. 

So the issue I have is people calling out 'noob' and 'scrub' whenever they see a new player, and in turn make the player feel bad. Let's have an example. 
You join a Minecraft server, build yourself a shack out of wooden planks, and are very proud of yourself for figuring out how to craft them. You surf the wiki and get yourself some new recipes. Wooden sword, built. Wooden pickaxe, built. Wait, how do you make an axe again? 
"Hey, how do I craft a wooden axe?"
"Noob"
"scrub"
"gtfo"
"u nub"

Feeling bad, you just go back to the wiki. Wooden axe, built. You go gather some more logs and get some stone. You upgrade your tools. Wait, how do you craft a stone hoe again?
"How do I craft a stone hoe?"
"i said gtfo"
"nub"
"u suck"
"g3t a lyf"

You start to feel really bad. Sadly, you go to the wiki for the 3rd time and figure it out. Stone hoe, built.
Still feeling down, you go mining and get some iron. While it smelts you start a farm. Wait, how do you make a bucket? Not wanting to tab out again and go to the wiki, you go for the third time to the chat for help.
"How do I make a bucket?"
"GTFO"
"NOOB"
"KL URSELF"

You feel insanely bad. You don't want to play the game anymore right now. Closing Minecraft, you stuff it into a folder and don't touch it again. 
Bam, there. Future Minecraft youtuber, more popular than those already known, never made. Charities hosted by the channel, millions of people made happier, gone. 

How many times has this already happened?


...

Next time that you find somebody asking how to craft something, help them out. Maybe give them some supplies. Teach them how to build, how to pvp better, everything. You never know if that person you're helping out could amount to something huge.

Edit: Pop Reel! Thanks!