Lunartictoc you need to remember the things you are worried about are very rare thankfully.
BF may protect against some of them but genes and your child's lifestyle will play a far,far bigger role in his future health.
Yes breast feeding is best but so are many other parenting choices. Just make sure you promote a healthy lifestlyle ie provide healthy food and exercise and don't smoke.
Extreme bfs do like to congregate on MN (I guess they've got a captive audience).They like to scare ff mothers for many reasons,don't fall into the trap and keep it all in perspective. I'm presuming your ds isn't eating a 100% organic diet fit to bursting with 150 essential vitamins and minerals daily(if he is all power to you but the vast majority of very healthy ff and bf children aren't),if so I bet you're not beating yourself up about it. Extreme bf like people such as yourself to get upset about this issue so they can then come on to quote and link ad nauseam. Don't rise to it.Just repeat to yourself breast may be best but it wasn't for me and it's just one of many other parenting choices.
Your child isn't doomed just because he had formula in the same way bf babies aren't super babies just because they had breast milk.If they grow up eating a fat filled,chemical filled diet,do little exercise and smoke they'll be trotting off to an early grave as quickly as the next person in fact faster than most ff babies who carry out a healthy lifestyle.
It would of been great to have bf your son but so what there are many,many other things you can do to compensate for it.
Don't avoid MN but see these posters for what they are-scaremongers who want others to feel crap because this is a parenting area they feel they excel in,often they have areas they feel bad about like all of us but focusing on bf as the be all and end all of a child's health makes them feel better as they have been successful in this particular area.
Most normal pro bf (you the type you come across in RL) don't hang out here linking to excess, they're out having a life or enjoying many of the other topics on Mumsnet. Most normal pro bf know breast is best and know every single mother in the land knows this. Most normal pro bf also know mothers need more support not scaremongering and if a baby isn't bf it really isn't the end of the world.Try and remember that when you're wading through the link mountain