#1 Because Dolph Ziggler couldn't afford to engage in yet another rushed storyline
Perhaps one of the most surprising things about Dolph Ziggler is that seldom do the vast majority of professional wrestling fans and experts acknowledge the fact that "The Showoff" is indeed one of the most dedicated and charismatic performers in the history of this industry.
Ever since he started off with the WWE in the mid-2000s, Ziggler has always been regarded as a dependable company man, so to speak. Irrespective of the nature and significance of the role that's accorded to him, the 2-time World Heavyweight Champion and self-confessed "Showoff", always "shows up" and "shows off" (pun intended).
Nevertheless, as I'd noted earlier, Ziggler built a decent amount of momentum for his on-screen character in 2018, only for it all to be wasted by Drew McIntyre chucking him out as though he were a fly in McIntyre's soup.
Add to the this the fact that Ziggler's comedy tour demanded that he focus on it from around January 27th, 2019 until the end of this month; and you have little-to-no-time for the WWE to book Ziggler in any halfway decent storyline...Ergo, we're faced with the conundrum of the ultra-talented Ziggler, missing out on WrestleMania 35.
Notwithstanding, Ziggler will most likely be inserted into the WWE Intercontinental Championship scene alongside the likes of Bobby Lashley and Finn Balor when "The Showoff" does eventually return to WWE.
Who's you like to see Dolph Ziggler face on RAW after WrestleMania 35? Sound off in the comments!