You have a machine that does what you want it to do so no.
That out of the way, it's on the low end of RAM so check out OWC and Crucial.com for memory and see if either offer a SSD for it. It can be sped up but as no budget and if you do your own upgrades, well, lots to decide and ponder.
I have imac early 2008, os10.11.1
Processor: 2.4 ghz intel core 2 duo
Memory: 2gb 800 mhz ddr2 sdram
Last time i upgraded os, it made mac really slow
Should i buy a newer os, or is my mac too old to run at a reasonable speed. I rarely use it...just to pay bills w quicken mostly since getting ipad