It is bad that UK joined in the EU

It is really bad that UK joined in the EU.Most of the members of the EU use the EURO,but UK does not.
It is not convenient,if some britsh people want to travel to some countries of the EU,they have to exchange pounds to EURO.And it is not so easy that people want to travel to member countries.They must apply,it costs many days.
To join in the EU,it is not good for UK.Because the economy still not good.Many people lose their jobs every day.Lots of students can not find job.And the EU looks like do not do anything to change this.
So,I dont\'t think it is good that UK joined in the EU