obviously <7 yrs old you should be doing it
once they get in that puberty zone you should flat ask your kid how they feel about it
my biological dad was HEAVY on the i love you's, hugs, and crying
my step dad did none of that. but basically showed affection by trying to teach me life lessons/speeches etc
i preferred my step dads level of affection as a teenager
ppl in here seem to be assuming that every kid wants their dad hugging them and saying i love you every day
maybe they do maybe they don't
problem is the average kid isn't going say hey can you stop hugging me when you pick me up from practice etc....even if they hate that shit
most of these issues can be solved with communication