Cuffs at the bottom of pants legs are quite common. There are various guidelines - are the pants pleated or flat-front, are they dress or casual, are they heavyweight or lightweight, etc. - regarding whether to get pants cuffed, but often it comes down to "Do you like cuffs?" (then get cuffs), or "Do you dislike cuffs?" (in which case, don't get cuffs). There are also differences of opinion as to how wide cuffs should be.
Personally, I have all my dress pants cuffed. I usually don't get corduroys or chinos cuffed. I usually prefer a cuff width of about 1.75".
Aside from looks, cuffs can add some weight to the bottom of the pants leg, permitting the pants to hang somewhat better.
I'm just touching very superficially upon the topic. Doubtless, there are at least hundreds (perhaps more) of SF posts having to do with pant cuffs. You can google them, if you're interested.