Dog trainings and shows.

Some people believe that pets are necessary for the modern life as because they help people to relax and have a fun in their busy lifes whereas others think it is more important to think about another other values such career, children, or wonderful holiday. rather than dogs, cats, etc. (English speakers use much shorter sentences, especially Americans. In our universities we are penalized for having sentences longer than 2 lines. Unfortunately you will have to unlearn the Russian writing tradition in order to write in English...unless you use both like Nabokov). 
As we see from statistics, the number of people from the first group is increasing. In modern life, (We put commas after clauses of time) many people haven’t  do not have a lot of real friends because everyone is very too busy to spend time with friends. That is why most people consider dogs to be their real (or best?) friends. They always have enough time to be with you and are always happy of seeing to see you coming come at home. (We use the simplest possible form when writing an essay in English). Nowadays, there are a lot of different dog shows, TV programs and different dog trainings that teach people to be better dog owners for dogs. In my opinion it is very good for all people even for those who haven’t don’t do not have any  a dog.
Dog shows certainly help people to learn more about their pets and become better owners. People watch shows and take courses. Thus, they become becoming more educated and make making their dogs happier. Moreover, when people visit dog trainings they have an ability to compare their pets with others', to exchange ideas, and techniques.
To sum up  In summary, although having a pet requires a lot of energy and time, the positive effects of having a dog overlaps outweigh the difficulties. Moreover it was shown in one study that people who have pets are normally live at 15% longer than people without pets in on average.