Maplestory: A Low-Str bowman will be able to save more Meso when buying equipment, and therefore, have more Meso to buy stronger equipment. There is another advantage to Low-Str Bowmen. Maple Warrior works better. Maple Warrior only affects your base stats. Since Low-Str Bowmen have a higher base Dex and lower base Str, they get more Dex added on. The new feature of automatically adding AP for you will automatically make you Low Str. Capping Str is a wise thing to do, but requires attention and planning.
First, you'll need to know what your final weapon will be. In this case, let's use the Casa Crow, which needs 90 Str. As soon as you get 90 Str, simply stop adding Str. But it gets a little more complicated. If you're Low-Str, you'll need to make sure that your equipment with Str will not be replaced with equipment with lower Str, otherwise, you can no longer equip the Casa Crow. You may also want to anticipate certain events. If you're going to get a Zakum Helm at level(Maplestory powerleveling) 91, you'll be better off either replacing your current Str equipment with Dex ones, or leave your base Str lower.
Common stopping points for Rangers are 105 and 125 Str for the Nisrock and the Reverse Engaw, respectively. For Snipers, Str is generally capped at 100 for Neschere and 120 for the Reverse Black Beauty. Remember, this is total Str, not base Str. For base Str, you will probably want 60-80 Str. You generally will not go over your limit, and if you need more Str, just add some Str.
Remember that the amount of Str you have does not affect your total HP(maplestory mesos). If you compare 10 Str-less Bowmen with 10 Regular Bowmen, you should see a very small difference, which only comes because HP is randomly given every level. However, the amount of Int you have does affect your MP. For every 10 Int you have, you will gain an extra 1 MP. If you have 9 Int, it will not count. Also, this is based on total Int.