Because if you don't, you'll be burned out and hating racing before it even gets going. The "more full" schedule looks something like this (only through the end of July, and still excluding all of the close Wisconsin racing):

3/20 COUGAR
3/21 Gapers Block
3/22 Gapers Block
3/23 Gapers Block
3/24 Gapers Block
3/25 Gapers Block
3/26 Spring Super Criterium
4/2 Hillsboro
4/9 Sherman Park Criterium
4/16 Flatlandia Kermese (RR)
4/26 SCW
4/27 ABD Crit
5/1 Vernon Hills Grand Prix
5/3 SCW
5/4 ABD Crit
5/7 Dixon
5/10 SCW
5/11 ABD Crit
5/14 Monsters of the Midway
5/15 Fox River Grove Cycling Challenge
5/17 SCW
5/18 ABD Crit
5/22 Urbana Grand Prix
5/24 SCW
5/25 ABD Crit
5/27 Memorial Day master OR Quad cities
5/28 Memorial Day masters OR Quad cities
5/29 Memorial Day masters OR Quad cities
5/30 SCW
6/1 ABD Crit
6/4 O'Fallon Grand Prix RR
6/5 O'Fallon Grand Prix Crit
6/7 SCW
6/8 ABD Crit
6/11 Tour of Galena Road Race (RR)
6/12 Tour of Galena Criterium
6/14 SCW
6/15 ABD Crit
6/16 TOAD
6/17 TOAD
6/18 Cobb Park Criterium or TOAD
6/19 TOAD
6/20 TOAD
6/21 SCW or TOAD
6/22 ABD Crit or TOAD
6/23 TOAD
6/24 TOAD
6/25 Glencoe GP or TOAD
6/26 TOAD
6/28 SCW
6/29 ABD Crit
7/5 SCW
7/6 ABD Crit
7/8 SUPERWEEEK
7/9 SUPERWEEEK
7/10 SUPERWEEEK
7/11 SUPERWEEEK
7/12 SCW or SUPERWEEEK
7/13 ABD Crit or SUPERWEEEK
7/14 SUPERWEEEK
7/15 SUPERWEEEK
7/16 SUPERWEEEK
7/17 SUPERWEEEK
7/18 SUPERWEEEK
7/19 SCW or SUPERWEEEK
7/20 ABD Crit or SUPERWEEEK
7/21 SUPERWEEEK
7/22 SUPERWEEEK
7/23 SUPERWEEEK
7/24 Great Egyptian Criterium or SUPERWEEEK
7/26 SCW
7/27 ABD Crit
7/30 Grayslake

Besides, the roads are clear here. Why drive all the way to S. Carolina when the riding here is fine?