Gentlemen...
Keep bringing your sons to games.
My son was at the first game with me and my best friend. He and I were at the final home game of that first season, gleefully joining in on the celebrations on the field.
He, and my friends girlfriend split games when we first got Ransom packs, and later they each got ransom packs. Later, when we graduated to being SSH's, he was with me when we got seats in a Supporters Section - 127. We were so happy, he and I sat in our new seats for half an hour...he even kept the sheet from the seat, taping it to his bedroom door.
The following year, he ran around the South Stand so we could pick up one seat in 116, another in 117 and two (in different rows) in 118. The grins we shared on the way home were plastered on our faces for days afterwards - finally we'd made it into Supporter Heaven. We just wanted a couple more "shit" seasons so we could get into 112 "officially" and TFC duly delivered!
It's not the same when I go to a game without him, and we see as many games as we can, whether MLS, Voyageurs Cup, CONCACAF, Canadian Mens and Womens games.