'this sort of thing' might not mean anything to you (it doesn't mean anything to me either, incidentally, as an agnostic who's not close to family), but hajj is deeply important to a lot of people. For him it was clearly an experience he felt would be important and meaningful for him and his family.
And I'd bet that a lot of people go on it because they're having a hard time, or they or someone they love is facing a serious illness, or maybe for other reasons that you would deign to deem 'worthwhile', and they feel it will help them in some way.
Saying he 'churned out a sob story' is inaccurate, not to mention pretty offensive. He didn't say he wanted to go on hajj because it was his granddad's last opportunity before he got too old, or that they couldn't otherwise afford it because they had a Dickensian landlord who was charging them an arm and a leg to rent a slum; he talked about it with his usual big smile and just said it was something he would love for him and his family to do.