You're in the initial stage currently, which you tend to have a lot.
"I'm gonna main sheik!"
"I'm gonna main sheik/zelda!"
"I'm gonna main IC's!"
"I'm gonna main fox!"
"**** it, I'm just gonna main mk"
"I'm back to yoshi again!"
"Man my luigi is beast, I took a stock off of you on wifi. Imma main him now!"
"I'm back to yoshi again!"
"I'm gonna main GW, I know he can do well in singles!"
"I'm gonna main the IC's now, this time it's different!"
"I'm gonna main ZSS!"
"I'm gonna main fox again, this time I know it's for sure!"
"I'm back to yoshi, gonna make him mid tier!"
This all takes place in a span of about 3 weeks, you get the general message no?