It appears that you've never IMd ne1.
Most if not *ALL* phojnes that IM (including the vaunted iPhone) automagically capitalize the first Character in a message and after a ". " (period space)
The characters after the first one are automagically lowercase. To make them UPPER CASE, takes time and effort of either a double hit of caps (to keep it on) or a hit of CAPS every key...
Considering Death and minimization of effort (lazy perhaps?), I'd say "Lol" is right.