Lamentations is a very serious  book, if you pay attention you will catch the emotion surrounding the destruction of the southern kingdom. This Book in many ways  is a  warning to us all.

In his dialogue Jeremiah tries to comfort Judah, Ultimately he comes to the conclusion the God is no respecter of persons and his judgment once initiated will not be avoided.

Jeremiah cries as a result of viewing the destruction of the southern kingdom of Judah, knowing it could have all been avoided had they heeded the warning of God.

God deals a judgment blow to Israel that sees even the tabernacle violently destroyed.

I will admit to you while reading through the book of lamentations I see myself. It's not through the eyes of the author that I see myself but through the actions of the children of Israel.

will your ill advised deeds go unpunished?

We see the reasons for the issues that have befallen to the children of isreal. As God Promised them erlier on in their establishment, they violate God and find themselves low in the presence of their enemies .

I will not proclaim to understand relationships with any degree of mastery, but I will say Hollywood and entertainment has given us a false and unbiblical picture.

Zedekiah goes his own way, and the people defile Gods temple bringing about their judgment and captivity.

It would appear as though the sorrow of the downfall of the southern kingdom of Judah has hit Jeremiah pretty hard. In the first two verses he poses the question how did we get here, and where are the people we confided in.  

https://www.youtube.com/watch?v=qi1VOR_sOYc&t=124s