I don't have any particular problem with Pence but I have a real problem with allowing the GOP to continue manipulating this race the way they've done since the beginning. The only reason they allowed Trump to run was to take out Cruz and that blew up in their faces when Cruz managed to keep his head down long enough for Trump to eliminate the establishment competition. In the end the GOP managed to force Trump to accept Pence on the ticket.
My consolation is that Trump will eventually talk and tell us of any deals he made which will take down those republicans who allowed themselves to be conned.
That's not what happened.
Trump entered this race threatening to be a 3rd-party candidate. The GOP panicked, thinking it was a rehash of Perot in 1992. So they co-opted him, getting him to run as a Republican.
He did very well in the primaries and the GOP panicked again, turning to Jeb to save them. Jeb flamed out. So the GOP turned to Rubio. He did a bit better, but flamed out. So they finally settled for Cruz.
It was then that we learned just how much the GOP hated Cruz, as the fellow GOP support was tepid at best.
Regardless, the root issue is that roughly 40% of the GOP primary voter base wants someone like Trump. A vindictive, spiteful king who seeks personal harm to fellow Americans and fellow party members.