For the one doing the sucking it is neither particularly good or bad, assuming the one the penis belongs to is healthy. Health-wise, it doesn't matter.
For the one being sucked, it is probably enjoyable and relaxing, which is a good thing.
Sharing an intimate act can promote a sense of well-being for both, which is probably a good thing.
Yes!! VERY good. I love it.
i think it very good
No, Sucking a penis before having sex is not a must. That for his pleasure, not yours.
...yes
sucking patricks penis!
sucking a penis
yes
You can if the person has an infection.
Licking clit
Just more pleasure.
Sucking my penis
This is a very obvious question, but it means to give someone a blowjob, or felatio. Some people call it penis sucking or sucking up. :l Yep..