Pac has explained why numerous times in radio interviews and magazines. For you to ask these "why" questions you have not paid attention over the years.
That being said Biggie releasing Who Shot Ya was dumb as fukk. People like always with Biggie, put the blame on Puff for trying to make money off a situation and as always forget Biggie is a grown ass man. He is the artist and knows it would look bad to release that single 2 to 3 months after Pac was shot.
And Pac was already going at Henchman and Tut even before Against All Odds. He was going at them through the street and handling Bad Boy on a mainstream level. He answered all these silly questions your asking and your still asking them
I cant with some of you guys.
Pac knew Chris didn't have all that clout he was mad that he wasn't straightforward about warning him instead of doing it in a round about way . He was able to forgive that BEFORE Biggie decided to do the whole Who Shot Ya thing to ignite a situation.
What really pissed off Pac though was when he was locked up from February to October, Biggie was everywhere all over the radio making all this money and getting so popular. Never once even visiting Pac in jail or writing him a letter...which looked bad because even thots that Pac was smashing found the time to send him letters but Biggie himself could not do it and he is supposed to be his boy. Biggie fans bring up him visiting Pac in the hospital but leave out the fact he never had any form of contact with him in jail.
Me Against the World was a success already but as the album was about to be released and throughout that year, Biggie didn't even help promote his boy's album. Im not talking about making informericials or something...but just something as simple as saying "Shout out to my boy Pac who is locked up now...he got his album out now make sure you go and support that".
He had time to complain that the beats on MATW were supposed to go to him....but couldn't find the time to rep the album. It was a success already but its the thought im referring to.
Plus how would Big look to Pac later on if Suge bailed him out, gave him an album deal and bought his mother a house and helped his family out. In Pac's mind he was saying to himself all those are things Big and Bad Boy could have done for him with all the hits and money they were making from the charts in 1995. People forget that Big and Puff could have EASILY did the same thing Suge did and bailed him out in exchange for a Record Deal.
These were the main reasons Pac was pissed at Big and went at him breh....
Like i always learned in life when you are trying to figure out the puzzle or reason for something. ....always go to money as the key reason