Is this nature or technology? Dunno.
Anyways, I don't really eat that well, and I was wondering if these were actually of any use at all. I take a multivitamin every morning and I feel ok, I don't have scurvy or anything. Considering I only the only fruit and veg I get is peas and carrots with my dinner and the odd apple.
Finding something convenient like a Vit tab that will enable you to continue eating badly

?
The other posters are right about Vitamin supplements; they're really only of any significance in an extreme emergency, where Vit deficiency is bordering on the chronic.
Really, the issue is always about how to effortlessly develop reasonably healthy eating habits that seemlessly integrate into your everyday routines and rituals.
At the most material, humdrum level, be sure to start your day with a REALLY BIG banana, always, just insist on it - its the most versatile, convenient, cheap and portable fruit around, and no worry about poisonous insecticides etc on the surface: this
alone will provide you with a huge proportion of your vit/min needs for the day, in addition to its food value [it also gives a pleasant serotonin boost, as does brown rice and pork, but that's another story]. Or whenever someone has the oven on at circa 200C, throw in a banana for around twenty minutes: roast whole banana, like roast whole pepper, is deliciously second to none. A habit that, surely, is so much easier to master than all that nervous-neurotic tablet-supplement shite? Hey hey with the monkeys!