lol.I remember i decided to level magic by cursing zammy mage in varrock castle.Bought runes for like 3 or 4 days of magic.Ended up leaving after 10 minutes
As for intense clicking, you will get used to it some time.
Use ahk/mousekeys for the click, that way you won't be straining your finger/hand from clicking the same spot hundreds of time.
I did stun alching till 94 doing it
ONLY when im playing on a laptop touch pad, not with a mouse though. Unless I am doing a skill that includes a lot of clicking and I've been training it 3+ hours, then it will begin to cramp up.