Seriously, though the amount of pros and cons is are constantly wavering. Se even though you'll have your good days and your bad days it's ok. It's also ok that you get frustrated to want to crawl in a corner for hours and cry. It's never easy doing something on your own.
Really who has the whole parenting thing figured out? Everybody has their own system to raise their kid or kids. Beyond some peoples thought process, there is no right or wrong way to parent. My parenting method raises my child to be self-sustaining and be a respectful human being. I know I'm no expert like the childless people who write books telling you how to raise your kid and what to do and what not to do.
Parenting is a flat mess.
Those people who you see with the 3 kids and a perfect house that make it look so easy. You may think "Man they have their stuff together." but really it's a show per se their kids still act out they still make a mess. I actually was able to keep my house looking like that for a month. It's not easy constantly following my son picking up after him. I even spent a whole Sunday cleaning my house. I do understand though why people have more than one kid now.
All I can really say is do your best raise a decent human. Love that little human to death and live life watch them grow. Treasure every moment put down your phone or use it to take as many pictures as possible.