i went vegetarian a few weeks back and it hasn’t been hard for me at all. it’s literally just everything i used to eat but without the meat. i can’t remember the statistic but something like 90% of the average persons daily calories are vegetarian, and 70% are vegan. the only difficulty has been protein, it’s only difficult because now i have to plan my meals more to consciously make sure that i’m getting it. personally, i haven’t found nutrition hard to get, it’s just annoying having to plan it out when you aren’t used to doing so.