They are not 100%. They do not prevent STD.

only if youre catholic

Depends on which kind. I believe the pill can effect the woman emotionally either when it is first introduced or if they stop taking it, not sure which (but being a man I wouldn't quote me on that). Also it doesn't prevent STDs. Also their is some debate as to if in some cases it could be considered a 'Abortive' measure of birth control, don't mean to open a can of worms with that debate but it is just worth individual research if that is important to you. Morning after pill is definitely abortive, if you are against that I wouldn't recommend (and I think anyone sexually active should being thinking way ahead of this) Condoms are pretty good, but beware of tears. Also use only approved sexual lubricants (if you are into that sort of thing) some household stuff could degrade the latex. I also heard a rumor once that you shouldn't keep a condom in your wallet cause the body heat could eventually warp the latex (but i dunno for sure, could just be because its old and that person didn't want to admit he had a condom in his pocket for 10 years before he could use it). Also don't reuse em (obviously) and don't flush, could clog the toilet. Also I would double check my facts. I'm a virgin, so I could easily be wrong.

The pill (depending on the girl, and what type) can cause serious mood swings, and is pretty much useless if she is on antibiotics. Also, There's a shot that stops the woman's cycle- It's good for 6 months at a time, and is extremely effective, but it can cause bone deterioration if used for a long time, and when their cycle starts back up, it can be irregular and extremely uncomfortable at first. (Disclaimer: I'm a guy, but have had g/fs who used all of the above methods, and I've noticed the effects.)

There is a famous bit of verse, of doggerel I am unable to quote now that covers it pretty well. Perhaps some reader can remember it. Mainly they get in the way or interrupt our enjoyment of men. They dont generally affect our response (although I know some who can't come if their men use condoms), but they are foreign little pieces of rubber or plastic with chemical cremes or, God forbid, chemical hormones that we require to prevent continuous pregnancy. So they work their way into our lives. To the extent we ignore them, and unfortunately most of us do more or less at times, we make ourselves vulnerable. To the extent we employ them and shield ourselves from conception, we render ourselves sexual objects. So the whole subject and process of contraception becomes quite philosophical for better of worse. But it is our cross to bear. I am pleased to be beyond the age of conception and to be able to allow my men to come to orgasm inside me knowing there is nothing foreign there. But I do miss the days of irresponsible youth when I would sweat the onset of almost every period. They now seem carefree though they were anything but.

Depending on the method you use, the spontaneity can get screwed. Also, some people are allergic to spermicides and/or latex and can become irritated by them. The pill can also have serious side-effects such as stroke, heart attack etc. Men complain about the feeling of "taking a shower with a raincoat on" when they wear a condom, but I personally don't buy that one.