も Verbば + も Verb

The sentence structure も Verbば + も Verb can be used to present two examples of possible actions or states, which are often contrastive. We've seen this grammatical structure before on a slightly smaller scale. It often translates as "some do ~ and others do ~", "sometimes ~ and other times ~", or "there are times when ~ and times when ~."

海に行きたい人もいれば、山に行きたい人もいて、旅行の計画が全然決まらない。
Some people want to go to the ocean, and others want to go to the mountains, so plans for this trip haven't been decided at all.

人生は考え方次第で、楽しくもなれば、苦しくもなる。
Depending on how you think about life, it could either be enjoyable, or it could be agonizing.

この仕事は危険でもあれば大変でもある。しかし誰かがやらなければならないのだ。
There are times when this job is dangerous, and times where it's tough. But somebody has to do it.

子供の頃は、兄弟とよく遊びもすれば、けんかもしたものだ。
When I was a kid, there were times when I often played with my siblings, and times when I fought with them.