Life with God in it and how it relates to being kicked in the crotch

This morning my housemate and I met for bacon sandwiches and read the bible. It's something we haven't done for a while, this is mostly due to me sleeping in til about 11 and him being really busy but it's always really cool.

Anyway, so we were reading 1 Peter in which is a part (verses 3 to 9) which says:

Praise be to the God and Father of our Lord Jesus Christ!
In his great mercy he has given us new birth into a living hope through the resurrection of Jesus Christ from the dead, and into an inheritance that can never perish, spoil or fade—kept in heaven for you, who through faith are shielded by God's power until the coming of the salvation that is ready to be revealed in the last time. In this you greatly rejoice, though now for a little while you may have had to suffer grief in all kinds of trials. These have come so that your faith—of greater worth than gold, which perishes even though refined by fire—may be proved genuine and may result in praise, glory and honor when Jesus Christ is revealed. Though you have not seen him, you love him; and even though you do not see him now, you believe in him and are filled with an inexpressible and glorious joy, for you are receiving the goal of your faith, the salvation of your souls.

I can't remember when, but at some point during reading 1 Peter the conversation goes
"Wow, it's just struck me, God wants all of me in exchange for all of him"
"Sounds like a pretty good deal to me!"

Later in the day after grabbing some lunch at Anglia Square my house mate was singing (to himself) "purify my heart, let me be as gold or precious silver" (classic song, at the bottom of this post) then he stops.
"That's a song taken from 1 Peter isn't it?"
"Yeah, I think so"
"So I'm singing a song asking for suffering!"
"Yeah, pretty much..."
"I think I better think more about what I sing, that's a pretty big ask I'm not sure I want to ask for suffering." (pretty fair point really)
"Yeah...you said earlier that it's pretty mind blowing that God wants to exchange all of you for all of him. I suppose there is a price to be paid and if you think about it, it's kind worth it...Could I kick you in the nuts for a million pounds?"
"heh, yeah!"
"Can I kick you in the nuts everyday for a week for 7 million?...obviously, if you're guaranteed that you don't get testicular cancer or anything"
"Yeah...I suppose so"
"Surely, if that suffering is worth it, how much more is having and knowing God completely?"
"Fair point."