Fake Fun Brings No Simcha

Of course, we know nothing about Yaakov and Eisav, but Chazal say: תהלים יְשָרִּים מְשַמְחֵי לֵב ה' פִּּקוּדֵי יט ט learning Torah makes you happy; certainly, Yaakov Avinu, the: ישֵב אֹהָלִּים big Masmid was full of Simcha. And Eisav who is described as an Adam Battel.