A knife is a tool. To answer your question according to your needs, you address who, what, when, where, why and how.
Examples. If you have to dig in the earth, yes.
If you want to filet a fish, no.
If you want a hunting knife, able to cut food, no.
If you want to keep a bear at bay, maybe.
My mentor is in his 70s, a professional firearms trainer. He bought some Glocks last year. And, then he spent $30 a knife having them reground and altered the factory sheaths. This is why you must get realistic and specific about what you want to do with the tool.
There is no way of avoiding the learning curve and buying a series of knives. This knife was designed for usage by military enlisted men. For that reason, it is not made "sharp". You may want a shorter, sharper knife and it would be a Mora.
You could want to attach your knife to molle gear or Alice gear. If so, good luck because you are going to have some work to do in finding some one to make you an appropriate sheath.
Many people buy Glock knives and then discover that they have other situations they want to address - and then buy a different tool. If you want a military knife for about the same price, then you also look at the ka bar offerings.
Welcome to the club!