It depends. There are no consequences of circumcision, as it is not something faulty that one does. If it's not done correctly, there may be some damage to the underlying penile structures, bleeding, excessive skin removal, etc. If it's done correctly, however, there should be no consequences. The only thing that I am aware of is those men who have had circumcision, may experience less sexual enhancement.
Penis is cleaner. Penis will not have an odor. Glans penis will be less sensitive. May help if you had premature ejaculations. Your partner may prefer it.