It adds to drama. This year Israel had a rather weak song and got very few votes from the jury. But then it almost won thanks to the majority of votes from text messages. Pure magic.
A few countries, including Ireland, called into question the text voting results for Israel last year. Not sure what the result of that investigation was.
What's more amusing is that they strategically came in second place after that bizarre voting. Apparently if they had come first, the final next year would have to be in Tel Aviv as per the rules. Now that would be drama. That seemingly was a bridge too far even for them.