[apeskape0012]

I have a Linux server I set up at home which I can access from anywhere on the internet. Also have a script set up to check my /var/log/secure file for unauthorized attempts. My question is why are all these people trying to gain access? It's not like it's a bank or anything..
(part of my hosts.deny file is here) and all the attempts are SSH (telnet logins aren't allowed, only SSH, and everything I do is thru an SSH tunnel.

ALL:125.63.87.194
ALL:218.108.10.116
ALL:79.187.3.50
ALL:218.38.55.188
ALL:64.79.196.167
ALL:41.207.177.20

ALL:74.94.201.22
ALL:128.121.21.39
ALL:211.239.120.254
ALL:69.60.115.120
ALL:64.192.63.152
ALL:83.3.86.106
ALL:85.234.158.73
ALL:201.31.44.5
ALL:202.213.248.219
ALL:210.48.146.162
ALL:219.235.66.115
ALL:201.80.197.70
ALL:219.239.98.111
ALL:67.192.61.213
ALL:222.69.93.27
ALL:200.184.44.146
ALL:218.62.83.66
ALL:87.120.43.108
ALL:216.126.224.8

Why are these people so nosy? Tempted to start emailing their service providers.
True, I usually do a whois on them, and they are mostly from China, Ukraine, Italy, and one from Utah.