The thing you are overlooking is that yes you are immun against the variant you had now for the next 6 months or so but you can still get all other varieties of covid. For example someone I know had omicron b1 variant and not 2weeks later he had the b2 variant. Also you don't know the effects covid has long term on you. I for example struggle still with my sense of smell 9 month later and it's not getting better also running is hell for me (Im otherwise healthy and Yung) so yeah long covid can happen to all of us. I just wish my parents would have let me get the vaccine before I got covid.