Because it contains other
spells that Fighters, and in fact all classes, gain access to at Level 1.
- Throw : double damage, double the fun.
- Shove : for a Bonus-Action, push your enemies at unreasonable distances, and ideally to their death. (Is Shove still an auto-success if enemies don't see you ?)
- Stealth : near complete Invisibility, at a fraction of the cost. The only difference with the Wizard spell is that you have to avoid walking straight into that vision cone thingy (expert-player tip : use Turn-Based Mode). But it grants you a supernatural aura of silence, so you don't have to worry about your 8 Dexterity, heavy boots and noisy armour.