Best question to ask yourself:
"What is something I can't use with my current lenses?"
This had led myself from my T4i (650D) and my 18-55 kit
To the 55-250mm zoom, the 10-22mm UWA, the 50mm f1.4 and the 100mm macro.
Last, the 24L II for a thin dof and wider FOV than my 50 1.4, then upgraded the 50 and 100 to L
Each lens opened up a new 'kind' of photography that I learned from.
I bought each lens used 9except the 24LII) and sold them for almost what I paid less shipping.
Not a bad deal for a 4-7 month 'rental'
I say try the 10-18 lens, the 24mm stm, and the 100mm USM macro.
Who knows, you may just fall in love with one of them.
Best of luck to you.